Merge remote-tracking branch 'upstream/master'
ERT-522 - Remove failed realizations from the active realization mask
ERT-522 - Removed User Killed legend from the simulations panel.
ERT-522 - MIN_REALISATIONS not respected in the GUI
ERT-522 - Added support in Ensemble Smoother
ERT-522 Reimplemented BoolVector count function and added test.
Merge pull request #393 from jepebe/ERT-522

Ert 522 MIN_REALISATIONS not respected in the GUI