Merge branch 'dev' of github.com:Wikia/app into dev
PLAT-364 Add getCategoryByName back to WikiFactoryHub

This adds the getCategoryByName method back to WikiFactoryHub. There
are some exsting calls to this method that have not been removed so we
need to continue to support this interface.
PLAT-365 Stylize getCategoryByName
PLAT-364 Use value equality and add a test

Per @inez I'm using value equality when checking for 0 on strcasecmp.
I'm also adding a test for this method. If we had tests for this method
we probably would not have this bug because the tests would have failed.

/cc @inez
Merge pull request #4295 from Wikia/add-getcategorybyname-back

PLAT-364 Add getCategoryByName back to WikiFactoryHub