FLOE-117: Implemented video metadata panel.
Merge branch 'master' into FLOE-117
FLOE-117: Use bootstrap styles rather than the self-customized.
FLOE-117: Improved the naming of css selectors.
Merge remote-tracking branch 'cindyli/FLOE-117'

* cindyli/FLOE-117:
  FLOE-117: Improved the naming of css selectors.
  FLOE-117: Use bootstrap styles rather than the self-customized.
  FLOE-117: Implemented video metadata panel.