class renaming; PDF & DjVu plugins in the list
Merge branch 'master' into beta

Conflicts:
	src/org/geometerplus/fbreader/formats/PluginCollection.java
	src/org/geometerplus/fbreader/formats/external/DjVuPlugin.java
	src/org/geometerplus/fbreader/formats/external/PDFPlugin.java
Merge branch 'master' into ice-cream-sandwich
Merge branch 'beta' into beta-ics
Merge branch 'ice-cream-sandwich' into beta-ics