GitLab

* Explained in Readme how to build and adjusted SWIFT3PATH accordingly

* Fixed findings from review

* Fixed findings from review. Added packaged, needed to build Kaidan.

* README: Use code-style for commands, Use libstdc++-5-dev

* Add Troubleshooting: Can't find Swiften_Boost

* Disconnect account on exit
* Minor UI changes
* Fix indent

QUrl::fromLocalFile() expects local file to exist thus it doesn't work with regular builds.

* Rename EchoBot to Kaidan
* Kaidan inherits QObject now
* Add RosterController and RosterItem
* Add minimal GUI for Roster (just a POC)