thumbnails in list view, covers in book info activity
Merge branch 'master' into ice-cream-sandwich
Merge branch 'ice-cream-sandwich' into yota2
Merge branch 'yota2' into kindle
switch sync options off if authorization is failed
updated Portuguese localisation
Merge branch 'master' into ice-cream-sandwich
Merge branch 'ice-cream-sandwich' into yota2

Conflicts:
	ChangeLog
Romanian translation author name
Merge branch 'master' into ice-cream-sandwich
Merge branch 'ice-cream-sandwich' into yota2
Merge branch 'yota2' into kindle