Update .gitignore for building with Qt Creator
Create the new channel list dialog.

Create a stub model to demonstrate the dialog.
Get rid of FChannelListDialog::Item in favour of FChannelSummary.
Make sort and filter work in the channel list.

Prepare for wiring in the real data source.
Hook up the new channel selector to the real channel
list and to the thing that actually joins channels.
Remove most of the old channel selector.
Merge branch 'channel-list' of https://github.com/kythyria/flist-messenger
Fixed problems with compiling for Qt4.
Removed non-existant files from the project file.
Changed std::vector<QString> to QStringList.
Tidied indentation.
Merge branch 'master' of https://github.com/Dhwty/flist-messenger