Refresh bug

Fixed refreshing bug by setting a $_SESSION variable. Interaction with
the website is now only allowed at the address http://moot/ OR
http://moot/index.php
Decided this was okay because it is a small site. Also allowed me to
replace *_content.php with just *.php
Resolve home and music conflicts

Copied updates from home_content and music_content files to home and
music.
Fix Music Page

The music page was including the jquery file again which was overiding
the previous one and causing issues with the image slider. Also, the
document.ready function is created in footer.php which was overiding
the one in music.js