Merge pull request #84 from Urban82/master

Updated italian translation
menu revamp in drawer and entries list views
added an 'about' view (activity) and improved some of the menu option labels
a bugfix to the home/up button in the ActionBar in GeneralPrefsActivity
Merge pull request #86 from mhuhtala/master

Added an 'about' section (activity) and reorganized the menu options in the drawer and entries list views
simplify the "back" mecanism of the new AboutActivity
Updated italian translation