Revert "Added a little hack for WYMeditor image dialog paging."

This reverts commit 0ca6dbaeaf6566ac4991323ac4a1b613fd6b7fed.
Merge remote-tracking branch 'asgeo1/revert_wymeditor_hack'
Increased version requirement for refinerycms-wymeditor per #2729
Remove devise keys from locales
Remove authentication altogether.
Baby steps in removing authentication from refinery. (woohoo!)
Ensure that zilch is required wherever it is needed.
Don't rely on there being any menu items.
Mock things that we're not concerned with.

In these cases, we only care that the method in Refinery that is directly
responsible for allowing a controller returns false and that the active
plugins list is populated with the plugins that we expect to test our
assertions.