first version of synchronisation settings
Merge branch 'master' into sync-resources
resources in progress
synchronization with beta branch
Merge branch 'master' into sync-resources
synchronize => synchronise
Merge branch 'master' into sync-resources
synchronisation preference strings
sync options
sync options: fixes
SyncOptions used in LibraryActivity
new book actions
new synchronisation-related actions in library menus
re-synchronize selected books
preferences code cleanup
added ACCESS_NETWORK_STATE permission
formatting
use sync options in SynchroniserService
fixed possible NPE
10 sec delay on SynchroniserService start