new book actions
Merge branch 'master' into yota2
new synchronisation-related actions in library menus
Merge branch 'master' into ice-cream-sandwich
Merge branch 'ice-cream-sandwich' into yota2
menu invalidation
Merge branch 'ice-cream-sandwich' into yota2
re-synchronize selected books
Merge branch 'master' into ice-cream-sandwich
Merge branch 'ice-cream-sandwich' into yota2