v0.2

Overall changes and additional features:

• New structure, due to qthread-problems. Fixed many segfaults.
• Creating and inviting people to groupchats
• More structurised chatview
• Better nameresolving in groupchats (and show namelist in friendinformation too)
• Set the Loglevels of console-output and file-output withouth restart programm.

"Stable" preview

1 day in groupchat and reciving msg's from others, no crash.
Still in heavy dev and need clearer structures to make it better readable, but proof of concept, a lot of stuff is solved clearer and clearer..