Fix "failed to create community" message

src/components/views/dialogs/CreateGroupDialog.js

@@ -108,7 +108,7 @@ export default React.createClass({
             // rather than displaying what the server gives us, but synapse doesn't give
             // any yet.
             createErrorNode = <div className="error">
-                <div>{ _t('Room creation failed') }</div>
+                <div>{ _t('Something went wrong whilst creating your community') }</div>
                 <div>{ this.state.createError.message }</div>
             </div>;
         }

src/i18n/strings/en_EN.json

@@ -583,7 +583,7 @@
     "Are you sure you wish to remove (delete) this event? Note that if you delete a room name or topic change, it could undo the change.": "Are you sure you wish to remove (delete) this event? Note that if you delete a room name or topic change, it could undo the change.",
     "%(actionVerb)s this person?": "%(actionVerb)s this person?",
     "Community IDs may only contain alphanumeric characters": "Community IDs may only contain alphanumeric characters",
-    "Room creation failed": "Room creation failed",
+    "Something went wrong whilst creating your community": "Something went wrong whilst creating your community",
     "Create Community": "Create Community",
     "Community Name": "Community Name",
     "Example": "Example",