updated ChangeLog
Merge branch 'master' into beta

Conflicts:
	ChangeLog
no parameter in default ZLKeyBindings constructor
Merge branch 'master' into beta

Conflicts:
	src/org/geometerplus/fbreader/fbreader/FBReaderApp.java
	src/org/geometerplus/zlibrary/core/application/ZLKeyBindings.java
separate ZLKeyBindings instance in PreferenceActivity
Merge branch 'master' into beta

Conflicts:
	src/org/geometerplus/android/fbreader/preferences/PreferenceActivity.java
synchronization with master branch
code simplification
Merge branch 'master' into beta

Conflicts:
	src/org/geometerplus/android/fbreader/preferences/PreferenceActivity.java