VE-1355: Created method setupVerticalsAndCategories that populates template's verticals and categoriesSets with correct data
VE-1355: First working version of the interactivity
VE-1355: Cleanup
VE-1355: Initial version of saving vertical and categories
VE-1355: Cleanup
Merge pull request #4281 from Wikia/VE-1355

VE-1355: Created method setupVerticalsAndCategories that populates templ...