Show offline friends names and some cosmetic changes
notes/status messages no longer forced
save nicks and exit tox properly
Save messenger data on exit
slight refactor of select_friend() and fix mistake
Merge pull request #25 from JFreegman/master

Show offline friends names and some cosmetic changes
implemented status and connectionstatus callbacks
define curses colours and replace magic numbers
remove superfluous prompt alerts and some visual changes
Merge pull request #26 from JFreegman/master

implemented status and connectionstatus callbacks