Added ability to choose the background image.
Merge branch 'release/rc-1' of https://github.com/AgriLife/College-2013 into release/rc-1

Conflicts:
	images/background8.png
	images/backgrounds/algae-lab.png
	images/backgrounds/background8.png
Merge branch 'release/rc-1' of https://github.com/AgriLife/College-2013 into release/rc-1
Wrapped the background image script in $(document).ready()