Update app.json

Minor changes and correctness checks.
do not count rare pets into pet counts & fix beast master achievement
deleteTag wasModified not necessary anymore
update slovene translation (@mrgoodwrong)
update ui to test hidable gears
add migration file for default preferences
code logic to update preferences
update translations with new Show gear strings
reorganize menus
update translations files
Merge pull request #1851 from ilefotiv/patch-1

Update app.json
Merge pull request #1815 from Fandekasp/make_all_gears_hidable

Make all gears hidable
Updated hideable gears

Updated:
-showArmor
-other
-showWeapon
-showShield
accomodate longer titles per #1855
Merge pull request #1857 from snicker/develop

accomodate longer titles per #1855
Merge pull request #1856 from ilefotiv/patch-2

Updated hideable gears
chat highlights work properly when preceeded by spaces again
Merge pull request #1868 from snicker/develop

chat highlights work properly when preceeded by spaces again
use helpers.countPets on server, fix client side pet count
hotfix for pet count on server