Added Serbian Cyrillic, Serbian Latin and Croatian, thanks Zsolt!
Don't bump installation version yet
updated translation resources
Fixed permissions of unit tests
cc-5747 Replaygain: doesnt work for aac tracks
Merge branch '2.5.x-serbian-croatian' of https://github.com/danielhjames/Airtime into 2.5.x

Conflicts:
	airtime_mvc/locale/hr_HR/LC_MESSAGES/airtime.mo
	airtime_mvc/locale/hr_HR/LC_MESSAGES/airtime.po
	airtime_mvc/locale/hu_HU/LC_MESSAGES/airtime.mo
	airtime_mvc/locale/hu_HU/LC_MESSAGES/airtime.po
	airtime_mvc/locale/sr_RS/LC_MESSAGES/airtime.mo
	airtime_mvc/locale/sr_RS/LC_MESSAGES/airtime.po
	airtime_mvc/locale/sr_RS@latin/LC_MESSAGES/airtime.mo
	airtime_mvc/locale/sr_RS@latin/LC_MESSAGES/airtime.po
updated translation resources
updated translation resources
updated translation resources
updated translation resources
updated translation resources
updated translation resources
updated translation resources
updated translation resources
updated translation resources
CC-5753 : Playlist Rule CSS
CC-5749 : Datatables ColVis CSS upgrade
Merge branch '2.5.x' into 2.6.x