Update Czech translation binary
Packaging updates for 2.5.0 release
Refined Hungarian translation, thanks Zsolt!
Corrections to Hungarian localization
Bump postinst version to 2.5.1
CC-5405: When editing a single show instance from a repeating series, should not create a new cc_show

Removed redundant timestamp var
Removed redundant DateTime object creation
CC-5405: When editing a single show instance from a repeating series, should not create a new cc_show

Refactored cc_show->isRepeating() function
CC-5405: When editing a single show instance from a repeating series, should not create a new cc_show

Refactored cc_show_day->getLocalEndDateAndTime() function
CC-5405: When editing a single show instance from a repeating series, should not create a new cc_show

Removed redundant function call to update last_scheduled column on a cc_show_instance
Merge branch '2.5.x' of https://github.com/danielhjames/Airtime into 2.5.x
Merge branch '2.5.x' of github.com:sourcefabric/Airtime into 2.5.x
Merge branch '2.5.x' into cc-5594-date_default