Updated dutch translation
Update languages in command line documentation.
Fixed typo in Dutch translations
Merge pull request #206 from joepadmiraal/master

Updated Dutch translations.
Fixture Editor: removed untranslatable strings
Added fixture: American DJ Sweeper Beam Quad LED
Added fixtures: American DJ Ultra Bar 6/9/12
Added fixture: American DJ Inno Color Beam Quad 7
Added fixture: American DJ Inno Color Beam LED (thanks to Louis Gutenschwafe)
NEW: RGB Matrices can now be converted to Sequences and imported into Shows
RGB Matrix: fixed sequence steps durations
RGB Matrix: Really fixed sequence steps timings

Chaser Editor: improved item update to avoid sending useless signals