AROMA: added missing string + update it.lang

archidroid.preset.group string should be added also in others lang files, but my upload connection speed is terrible! I can't push master-cm branch (with edited files) to my GitHub and send a pull request in a reasonable time, probably AD 3.0.1 would be already available, haha.
Merge pull request #43 from ste22032/patch-1

AROMA: added missing string + update it.lang
AROMA: misc, thanks to @ste22032
Merge branch 'master-cm' of https://github.com/ArchiDroid/ArchiDroid into i9300-cm-experimental