Fix cclist

* on reply, fill cc with everyone from to and cc except yourself, fix #96
* in reply field, show full name and email, fix #223

Only thing left is point 2 from https://github.com/owncloud/mail/issues/96 – if you were in cc (or even in to), you are put in the cc of the reply. That should not happen. @DeepDiver1975 can you fix that?

cc @joshua-s @zinks- as well.