Updated according 9.1

Hi, Francisco! It seems your vacations are over? Back to work and another version! Great! Just a note - as I see some strings from System monitor section remain untranslated (full version features) - I searched through and found them in res/xml/settings_prefs.xml.
Is there any way to transfer them to strings file too? Thanks!
Merge pull request #23 from gaich/patch-1

Updated according 9.1