ReloadablePreference
Merge branch 'master' into beta

Conflicts:
	src/org/geometerplus/android/fbreader/preferences/FontPreference.java
WallpaperPreference implements ReloadablePreference
Merge branch 'master' into beta

Conflicts:
	src/org/geometerplus/android/fbreader/preferences/WallpaperPreference.java
reloadable
Merge branch 'master' into beta