Italian translation: update
Update de.h
Merge pull request #671 from ovalseven8/patch-2

Update de.h
Redraw group when a peer starts streaming audio to chat.
Grey out send audio button when group chat is text only.
Save online only filter to utox_save.
Merge pull request #670 from Ansa89/italian-translation

Italian translation: update
Actions messages are now blue.
Added audio filtering to uTox.
Remove dropdown when audio filtering isn't compiled in.
Port uTox to new toxav api.