[Util] Added Util::GetSystemPaths() and Util::FindInSystemPath().
[Fenet] Migrate to Util.
[Launchy] Keep executor in the item instead of a hash.
[Launchy] Moved QML query handling to FSDisplayer.
[Launchy] Added SysPathItemProvider.
[Launchy] Instantiate & use SysPathItemProvider.
[Launchy] Autoselect first entry if none is selected.