New UI for xhdpi.
Layouts corrected.
Czech translation extended.
Low memory cases processed.
Other minor fixes.
Merge branch 'master' of https://github.com/almalence/OpenCamera.git

Conflicts:
	res/layout/gui_almalence_quick_control_grid_element.xml
	res/values-large/almalence_gui_dimens.xml
	res/values-xlarge/almalence_gui_dimens.xml