qt client: add the last joind channel check box to the connect to a server dialog like android client.

[amirmahdifard]

Description

in android client, in the connect to a server dialog, we have a check box called last joined channel: when this option is checked, in that server any channel you join itt will remember the path and the password, and next time you log in it will lead you directly to that channel, wich is a useful feature for me a lot: please also add this ability to the qt client, thanks a lot.

Application

• [X] qtTeamTalk
• [ ] TeamTalkAndroid
• [ ] iTeamTalk
• [ ] TeamTalkServer