Adding in YouTube functionality.
Final YouTube commit.
Merge branch 'artifex_youtube' of https://github.com/uklibraries/ohms-viewer into artifex_youtube
force Brightcove to use HTTPS

Conflicts:
	tmpl/player_brightcove.tmpl.php
Merge branch 'master' into artifex_youtube

Conflicts:
	tmpl/player_brightcove.tmpl.php
Merge branch 'artifex_youtube'