Adds a few new icons (animation for connecting to wifi) updates nm-* ico...

...ns (vpn)

added an animation for unity when connecting to a wifi. Furthermore a few network icon improvements (btw. you should really think about, merging the 22x22/status folder from Numix-Circle with this one...)

Btw: would you consider changing the battery icons? I personally think, that they are you "worst" icons