free playbin object after creating a new one in media view
better handle error when gstreamer can't load in media view
first take at using javafx for image viewing in Media View (faster in-memory loading, no memory issues, better stability, not relying on gstreamer bundled)
add check for null node to media viewer
improve loading of png, bmp and large images (scale them to save memory in rendered canvas).
Use javafx provided extensions instead of harcoding them.
event better image scaling (using scalr) and better handling of huge hi-res images
Merge remote-tracking branch 'upstream/master'