Updated Polish translation
Improved time/date widgets in Create/Update event dialog: Bug #725783

This introduces new time/date widgets when creating or editing an
event.  Rather than popping up over the existing window, a new card
in the deck is shown (much like when editing recurring events)
allowing the user to visually adjust date and time with mouse and/or
the keyboard.

This also removes the sustained duration auto-adjustment (bug #732031)
Update POTFILES.in
Fix out-of-range bug

A change introduced late in the time/date widgets patch introduced
a regression in input handling.  This reverts that change.
Move events from one calendar to another: Bug #727627
Merge branch 'master' into wip/732029-gtk-312

Conflicts:
	src/rc/create-update-event.ui
Use DeckPopover for simple windows, DeckWindow for more complicated editing