Updated Hebrew translation
Updated Polish translation
Added Turkish translation
Updated Brazilian Portuguese translation
Updated Turkish translation
Updated Spanish translation
Updated Slovenian translation
Added test for 6th Tuesday
Don't put quick add user string in event description: Bug #732028
Initialize to activated date when adding w/o quick-add: Bug #732029

When the user doesn't supply quick-add details but goes straight
through to the editor, initialize editor with initial date/time.
Crash due to altering stack model cache during iteration: Bug #732035

The stack model map was being altered via our own signal handler
being fired due to destroying widgets while walking the cache map,
causing an assertion in Gee.  Using a copy of the map's keys works
around the issue.
Switch Idle and Timeout code to use Scheduled class
YEARLY quick-add and tests
Merge branch 'master' into wip/725785-create-recurring
Further tests and fixes for recurring w/ end dates
Fix dealing with day-of-week position in month for DTSTART