Modified file list view to table format
Link based navigation and basic file statting

Reorganized controller to stat files. Pass information to view,
including relative urls for link based navigation. Also added
a dummy upload form and some style tweaks.
File type detection

Added file type detection. Appropriate glyph icons are displayed.
Reordered collapsed grid and added dummy form for creating files or folders
Modified to use internal mime package and added a few types
Calculate size of all files in folder (shallow)