Revamped the changeImage() functionality

- Added the default slide interval as a Session variable
- Added #full to templates
- Broken the logic out to more discreent functions
- Can now pass custom timeouts to changeImage()
Merge branch 'master' of github.com:shrop/spectacle-frontend

Conflicts:
	client/views/home.js
Removed the startup file that sets slideDefaultInterval
Took out the "full" id for content templates
Merge pull request #5 from deetergp/master

Enabled ability to have custom interval times