check if destination is writeable
version bump
show notification if files failed to copy
restore xbmc allowed settings via json
updated readme,changelog and version info
Merge pull request #58 from robweber/gui_settings

Add limited system settings restore
Merge branch 'master' into google_drive

Conflicts:
	resources/language/English/strings.xml
	resources/lib/backup.py
string id changed
updated for new file write checks