Merge pull request #742 from stowellm/goat

 Fixed queue saving (possibly - I can't reproduce the error anymore) b...
improved file browser. started to add file type filtering
fixed merge conflicts
Merge pull request #744 from nickavv/parachute

improved file picker
file browser has filetype filtering, a tiny bit of strange behavior with regards to selection
Merge pull request #745 from stowellm/goat

Added a select/deselect all feature to the queue layout, added a delete ...
Merge pull request #746 from nickavv/parachute

Added filetype filters