diff --git a/static/ng-demo/package-lock.json b/static/ng-demo/package-lock.json
index 8346a39..78f6b3c 100644
--- a/static/ng-demo/package-lock.json
+++ b/static/ng-demo/package-lock.json
@@ -725,6 +725,7 @@
       "resolved": "https://registry.npmjs.org/align-text/-/align-text-0.1.4.tgz",
       "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
       "dev": true,
+      "optional": true,
       "requires": {
         "kind-of": "^3.0.2",
         "longest": "^1.0.1",
@@ -736,6 +737,7 @@
           "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-3.2.2.tgz",
           "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
           "dev": true,
+          "optional": true,
           "requires": {
             "is-buffer": "^1.1.5"
           }
@@ -4323,6 +4325,7 @@
       "resolved": "https://registry.npmjs.org/fstream/-/fstream-1.0.11.tgz",
       "integrity": "sha1-XB+x8RdHcRTwYyoOtLcbPLD9MXE=",
       "dev": true,
+      "optional": true,
       "requires": {
         "graceful-fs": "^4.1.2",
         "inherits": "~2.0.0",
@@ -6434,7 +6437,8 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/longest/-/longest-1.0.1.tgz",
       "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "loose-envify": {
       "version": "1.3.1",
@@ -6680,6 +6684,7 @@
       "resolved": "https://registry.npmjs.org/minipass/-/minipass-2.2.4.tgz",
       "integrity": "sha512-hzXIWWet/BzWhYs2b+u7dRHlruXhwdgvlTMDKC6Cb1U7ps6Ac6yQlR39xsbjWJE377YTCtKwIXIpJ5oP+j5y8g==",
       "dev": true,
+      "optional": true,
       "requires": {
         "safe-buffer": "^5.1.1",
         "yallist": "^3.0.0"
@@ -6689,7 +6694,8 @@
           "version": "3.0.2",
           "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.2.tgz",
           "integrity": "sha1-hFK0u36Dx8GI2AQcGoN8dz1ti7k=",
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -7038,7 +7044,8 @@
           "version": "2.2.1",
           "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
           "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "assert-plus": {
           "version": "0.2.0",
@@ -7059,6 +7066,7 @@
           "resolved": "https://registry.npmjs.org/boom/-/boom-2.10.1.tgz",
           "integrity": "sha1-OciRjO/1eZ+D+UkqhI9iWt0Mdm8=",
           "dev": true,
+          "optional": true,
           "requires": {
             "hoek": "2.x.x"
           }
@@ -7075,6 +7083,7 @@
           "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
           "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-styles": "^2.2.1",
             "escape-string-regexp": "^1.0.2",
@@ -7135,7 +7144,8 @@
           "version": "2.16.3",
           "resolved": "https://registry.npmjs.org/hoek/-/hoek-2.16.3.tgz",
           "integrity": "sha1-ILt0A9POo5jpHcRxCo/xuCdKJe0=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "http-signature": {
           "version": "1.1.1",
@@ -7199,7 +7209,8 @@
           "version": "2.0.0",
           "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-2.0.0.tgz",
           "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "tunnel-agent": {
           "version": "0.4.3",
@@ -10646,33 +10657,6 @@
         "webpack-sources": "^1.0.1"
       }
     },
-    "webpack-core": {
-      "version": "0.6.9",
-      "resolved": "https://registry.npmjs.org/webpack-core/-/webpack-core-0.6.9.tgz",
-      "integrity": "sha1-/FcViMhVjad76e+23r3Fo7FyvcI=",
-      "dev": true,
-      "requires": {
-        "source-list-map": "~0.1.7",
-        "source-map": "~0.4.1"
-      },
-      "dependencies": {
-        "source-list-map": {
-          "version": "0.1.8",
-          "resolved": "https://registry.npmjs.org/source-list-map/-/source-list-map-0.1.8.tgz",
-          "integrity": "sha1-xVCyq1Qn9rPyH1r+rYjE9Vh7IQY=",
-          "dev": true
-        },
-        "source-map": {
-          "version": "0.4.4",
-          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.4.4.tgz",
-          "integrity": "sha1-66T12pwNyZneaAMti092FzZSA2s=",
-          "dev": true,
-          "requires": {
-            "amdefine": ">=0.0.4"
-          }
-        }
-      }
-    },
     "webpack-dev-middleware": {
       "version": "3.1.3",
       "resolved": "https://registry.npmjs.org/webpack-dev-middleware/-/webpack-dev-middleware-3.1.3.tgz",
@@ -10896,12 +10880,30 @@
       }
     },
     "webpack-subresource-integrity": {
-      "version": "1.1.0-rc.4",
-      "resolved": "https://registry.npmjs.org/webpack-subresource-integrity/-/webpack-subresource-integrity-1.1.0-rc.4.tgz",
-      "integrity": "sha1-xcTj1pD50vZKlVDgeodn+Xlqpdg=",
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/webpack-subresource-integrity/-/webpack-subresource-integrity-1.5.1.tgz",
+      "integrity": "sha512-uekbQ93PZ9e7BFB8Hl9cFIVYQyQqiXp2ExKk9Zv+qZfH/zHXHrCFAfw1VW0+NqWbTWrs/HnuDrto3+tiPXh//Q==",
       "dev": true,
       "requires": {
-        "webpack-core": "^0.6.8"
+        "webpack-sources": "^1.3.0"
+      },
+      "dependencies": {
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "dev": true
+        },
+        "webpack-sources": {
+          "version": "1.4.3",
+          "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-1.4.3.tgz",
+          "integrity": "sha512-lgTS3Xhv1lCOKo7SA5TjKXMjpSM4sBjNV5+q2bqesbSPs5FjGmU6jjtBSkX9b4qW87vDIsCIlUPOEhbZrMdjeQ==",
+          "dev": true,
+          "requires": {
+            "source-list-map": "^2.0.0",
+            "source-map": "~0.6.1"
+          }
+        }
       }
     },
     "websocket-driver": {
diff --git a/static/ng-demo/yarn.lock b/static/ng-demo/yarn.lock
index 14537b8..48051ac 100644
--- a/static/ng-demo/yarn.lock
+++ b/static/ng-demo/yarn.lock
@@ -1308,7 +1308,7 @@ compressible@~2.0.13:
 
 compression@^1.5.2:
   version "1.7.2"
-  resolved "http://registry.npmjs.org/compression/-/compression-1.7.2.tgz#aaffbcd6aaf854b44ebb280353d5ad1651f59a69"
+  resolved "https://registry.npmjs.org/compression/-/compression-1.7.2.tgz#aaffbcd6aaf854b44ebb280353d5ad1651f59a69"
   dependencies:
     accepts "~1.3.4"
     bytes "3.0.0"
@@ -3995,6 +3995,10 @@ next-tick@1:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/next-tick/-/next-tick-1.0.0.tgz#ca86d1fe8828169b0120208e3dc8424b9db8342c"
 
+ngx-cookie@^3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/ngx-cookie/-/ngx-cookie-3.0.1.tgz#50f3335d578a9764902cfa0d90cccba7f0f3339d"
+
 no-case@^2.2.0:
   version "2.3.2"
   resolved "https://registry.yarnpkg.com/no-case/-/no-case-2.3.2.tgz#60b813396be39b3f1288a4c1ed5d1e7d28b464ac"
@@ -5455,12 +5459,8 @@ sockjs@0.3.19:
     uuid "^3.0.1"
 
 source-list-map@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/source-list-map/-/source-list-map-2.0.0.tgz#aaa47403f7b245a92fbc97ea08f250d6087ed085"
-
-source-list-map@~0.1.7:
-  version "0.1.8"
-  resolved "https://registry.yarnpkg.com/source-list-map/-/source-list-map-0.1.8.tgz#c550b2ab5427f6b3f21f5afead88c4f5587b2106"
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/source-list-map/-/source-list-map-2.0.1.tgz#3993bd873bfc48479cca9ea3a547835c7c154b34"
 
 source-map-resolve@^0.5.0:
   version "0.5.1"
@@ -5505,7 +5505,7 @@ source-map@0.5.x, source-map@^0.5.3, source-map@^0.5.6, source-map@^0.5.7, sourc
   version "0.5.7"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
 
-source-map@^0.4.2, source-map@^0.4.4, source-map@~0.4.1:
+source-map@^0.4.2, source-map@^0.4.4:
   version "0.4.4"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.4.4.tgz#eba4f5da9c0dc999de68032d8b4f76173652036b"
   dependencies:
@@ -6251,13 +6251,6 @@ webdriver-manager@^12.0.6:
     semver "^5.3.0"
     xml2js "^0.4.17"
 
-webpack-core@^0.6.8:
-  version "0.6.9"
-  resolved "https://registry.yarnpkg.com/webpack-core/-/webpack-core-0.6.9.tgz#fc571588c8558da77be9efb6debdc5a3b172bdc2"
-  dependencies:
-    source-list-map "~0.1.7"
-    source-map "~0.4.1"
-
 webpack-dev-middleware@3.1.3, webpack-dev-middleware@^3.1.3:
   version "3.1.3"
   resolved "https://registry.yarnpkg.com/webpack-dev-middleware/-/webpack-dev-middleware-3.1.3.tgz#8b32aa43da9ae79368c1bf1183f2b6cf5e1f39ed"
@@ -6318,18 +6311,18 @@ webpack-merge@^4.1.2:
   dependencies:
     lodash "^4.17.5"
 
-webpack-sources@^1.0.1, webpack-sources@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/webpack-sources/-/webpack-sources-1.1.0.tgz#a101ebae59d6507354d71d8013950a3a8b7a5a54"
+webpack-sources@^1.0.1, webpack-sources@^1.1.0, webpack-sources@^1.3.0:
+  version "1.4.3"
+  resolved "https://registry.yarnpkg.com/webpack-sources/-/webpack-sources-1.4.3.tgz#eedd8ec0b928fbf1cbfe994e22d2d890f330a933"
   dependencies:
     source-list-map "^2.0.0"
     source-map "~0.6.1"
 
 webpack-subresource-integrity@^1.1.0-rc.4:
-  version "1.1.0-rc.4"
-  resolved "https://registry.yarnpkg.com/webpack-subresource-integrity/-/webpack-subresource-integrity-1.1.0-rc.4.tgz#c5c4e3d690f9d2f64a9550e07a8767f9796aa5d8"
+  version "1.5.1"
+  resolved "https://registry.yarnpkg.com/webpack-subresource-integrity/-/webpack-subresource-integrity-1.5.1.tgz#6f44ea99987266b70c4ec42ac51064d33e982277"
   dependencies:
-    webpack-core "^0.6.8"
+    webpack-sources "^1.3.0"
 
 webpack@~4.8.1:
   version "4.8.3"