Fix for Bug 758628

This implements a navigable header on top of the file and folder pages. The header will contain the full name of the file or directory currently being looked at. It can easily be cut/pasted into an editor or terminal. Each of the individual components of the path can be clicked on for easy navigation. This is similar to how http://lxr.free-electrons.com/source/block/blk-cgroup.c works. 

I have a demo version of the new interface at http://noufalibrahim.name:8080/code/source/