refactoring: extracted FBReader.runCancelAction method
Merge branch 'master' into beta

Conflicts:
	src/org/geometerplus/android/fbreader/FBReader.java
fixed working with cancel action in PDF plugin (plugin still to be fixed)
fixed cancel menu "jump back" action
cleanup: no debug printing in Bookmark class
Merge branch 'master' into beta
code simplification
Merge branch 'master' into beta
compilation issue