Improve formatting of navigation partial

Changed newlines and indentation to make this partial easier to read.
Add Google Analytics tag back to application layout

Factored GA js out into a partial and used that partial at the bottom of both application and splash layouts
Add footer to splash layout

Factored footer out into a partial. Added that partial to splash layout.
Move disqus js tag from splash layout to application layout

Disqus code is not needed by the splash layout.

Discus code is needed on bathroom index and show pages. Factored it out into a partial and put it in application layout. Should be in those specific pages instead, but this is simple for now.
Improve formatting on application layout

Just changes to newlines and indentation, no functionality changes.
Merge pull request #67 from eleather/master

Most of the way through cleaning up application and splash layouts