refactor: improve strings for space image editing

Author: joragua

owncloudApp/src/main/res/values/strings.xml

@@ -851,9 +851,9 @@
     <string name="edit_space">Edit space</string>
     <string name="edit_space_correctly">Space updated correctly</string>
     <string name="edit_space_failed">Space could not be updated</string>
-    <string name="edit_space_image">Edit space image</string>
-    <string name="edit_space_image_correctly">Space image updated correctly</string>
-    <string name="edit_space_image_failed">Space image could not be updated</string>
+    <string name="edit_space_image">Edit image</string>
+    <string name="edit_space_image_correctly">Image updated correctly</string>
+    <string name="edit_space_image_failed">Image could not be updated</string>
     <string name="disable_space">Disable space</string>
     <string name="disable_space_dialog_title">Do you really want to disable the space: %1$s?</string>
     <string name="disable_space_dialog_message">If you disable the selected space, it can no longer be accessed. Only Space managers will still have access. Note: No files will be deleted from the server.</string>