added player files

lib.php

player/core.html

player/css/bootstrap/bootstrap.css

player/css/bootstrap/bootstrap.css.map

player/css/bootstrap/bootstrap.min.css

player/css/bootstrap/bootstrap.min.css.map

player/css/core_global_style.css

player/img/opencast.svg

player/js/engage/core.js

player/js/engage/event.js

player/js/engage/models/engage.js

player/js/engage/models/pluginInfo.js

player/js/engage/tab_logic.js

player/js/engage/views/desktop.js

player/js/engage/views/embed.js

player/js/engage/views/mobile.js

player/js/engage_init.js

player/js/lib/backbone.js

player/js/lib/basil.js

player/js/lib/bootbox.js