fixed multiple volume request on volume change

changed event and added a small timeout to prevent unnecessary volume stumble
fixes linebreak when browsing on small screen phones
added media qy for small devices (320px)
deny web access to _OS_SETTINGS

I don't really see a reason why this should be accessible via web...
Merge pull request #31 from jomo/patch-1

deny web access to _OS_SETTINGS
Update _footer.php
Merge pull request #26 from enapupe/mediaqy-mobilesmalll

added media qy for small devices (320px)
Merge pull request #25 from enapupe/fix-textwrap

fixes linebreak when browsing on small screen phones
Merge pull request #23 from enapupe/master

fixed multiple volume request on volume change