MBTiles background refactoring and testing
mbtileslayer opacity setting added
layer action selection corrected, german pref strings added
Aligned all Versions
Merge branch 'RoProducts-mbtilestest' into mbtilesrefactoring
Check for Mbtiles after download startup package
Merge pull request #29 from geosolutions-it/mbtilesrefactoring

Support for MBtiles as Background
Add min and max zoom levels in MapActivity Intent extras. Fixes #30
Improved locales strings. Fixes #31
edit icon fix done
localization icon on form map and refresh icon removed
Merge branch 'fix_edit_icon' of https://github.com/RoProducts/MapStoreMobile into RoProducts-fix_edit_icon

Conflicts:
	geocollect/android/core/src/it/geosolutions/geocollect/android/core/mission/PendingMissionListActivity.java
Refresh the list on resume
Merge branch 'RoProducts-fix_edit_icon'
Merge branch 'geocollect_interface_tasks' of https://github.com/RoProducts/MapStoreMobile into RoProducts-geocollect_interface_tasks
Merge branch 'RoProducts-geocollect_interface_tasks'