clarified interpretation of blkid output
added missing success message to volume_format_fs
execute formatting in the background
mark busy devices as such
fixed a small bug in CryptoBoxRootActions
finished unittests for plugin disks
finished unittests for plugin help
finished unittests for plugin language_selection
finished unittests for plugin logs
finished unittests for plugin network
finished unittests for plugin plugin_manager
finished unittests for plugin shutdown
finished unittests for plugin system_preferences
finished unittests for plugin user_manager
added english 'translations' to all plugins (by copying msgid to msgstr)
