Merge pull request #1437 from Kocal/patch-2

[Panther] Configure env `PANTHER_DEVTOOLS=0`

Author: fabpot

symfony/panther/1.0/manifest.json

@@ -21,7 +21,8 @@
     "dotenv": {
         "test": {
             "PANTHER_APP_ENV": "panther",
-            "PANTHER_ERROR_SCREENSHOT_DIR": "./var/error-screenshots"
+            "PANTHER_ERROR_SCREENSHOT_DIR": "./var/error-screenshots",
+            "PANTHER_DEVTOOLS": "0"
         }
     },
     "add-lines": [