fix spinner and media control positions
pip: enhance border style

Conflicts:
	src/plugins/pip/pip.js
media control: fix video ended event handling
Conflicts:
	src/plugins/html5_video_playback/html5_video_playback.js
pip: fix border when addMaster() and call stop() and set src to "" for
html5 playback containers

Conflicts:
	src/plugins/pip/pip.js
pip: remove unnecessary window reference