FLUID-4701: Adding simple handling of a data URI for captions.
FLUID-4701: Fixing the data url mime type in the example.
FLUID:4795: Updates to bring captionator more in line with current spec
FLUID-4800: Improving the data url parsing with code from Flocking.
Merge remote-tracking branch 'michelled/FLUID-4701'

* michelled/FLUID-4701:
  FLUID-4800: Improving the data url parsing with code from Flocking.
  FLUID-4701: Fixing the data url mime type in the example.
  FLUID-4701: Adding simple handling of a data URI for captions.
FLUID-4800: Minor stylistic tweak to loadTrack().
Merge branch 'master' into FLUID-4795
Merge remote-tracking branch 'acheetham/FLUID-4795'

* acheetham/FLUID-4795:
  FLUID:4795: Updates to bring captionator more in line with current spec