Merge pull request #1 from hawaii-desktop/hawaii

Merge with master.
Merge branch 'hawaii'
Update from upstream
Remove Concurrent from Qt5Transitional list

Qt5Transitional has some problems it looks for -lQt5::Concurrent, it's
not expanded into the actual shared library and cause build failures
on Vibe.
Merge branch 'hawaii' of github.com:hawaii-desktop/solid into hawaii