Combine export settings+restrictions per app & fix progress
Merge pull request #1128 from jpeg729/export_progress

Combine export settings+restrictions per app & fix progress
Update service with progress notifications for migration, randomization and upgrade
Updated changelog
Check am context
Allow secondary users to set restrictions
Fixed some settings not migrated correctly

Refs #1127
Show reboot message for app view when required
Kill application is not experimental anymore
Only manage applications
Use activity context
Updated to do
Make new strings translatable
Translate new strings in Dutch
Another try to fix global settings

Refs #1127
Prevent migration of already migrated files