Applied some color changes to the editor page.
Refinements for Tuesday's demo.

* Filesystem now only shows top level folder of project
  in URL, rather than all folders at the user's root.
* GitHub button now goes to the user's project page on
  GitHub, instead of going to GitHub's homepage.
Green hover on filesystem items.
Final color refinements.
Replaced header image.
added routes for git functions, also added closing php tag
removed the closing tag for PHP
Merge pull request #41 from samuelfrench/master

added routes for git functions, also added closing php tag
Merge pull request #39 from apotheos/feature/demo-filesystem

Feature/demo filesystem
Merge pull request #40 from apotheos/feature/colors

Feature/colors