Bunch of UI features + some fixes

The following commits consist mainly of UI enhancements with some fixes buried in them. While these few commits feel rather bulky, each of them acts as a tightly connected set of changes with (hopefully) detailed enough description.

The ares touched upon are:
* Cleanup/additional stats for MainWindow's status bar
* Additional stats/visual cues in 'Star View'
* Small additions to 'Detailed Host View'