Fixed IE-compatibility of the embedded music file player
Fixed IE-compatibility of the embedded music file player

- Some of the used javascript features were not available on (older) Internet Explorers
- The feature now mostly works on IE9+
- Player for individual shared file is disabled on IE9 and IE10

owncloud/music,owncloud/music,Faldon/music,paulijar/music,owncloud/music,paulijar/music,Faldon/music,paulijar/music,owncloud/music,owncloud/music,Faldon/music,paulijar/music,Faldon/music,Faldon/music,paulijar/music