new filecache class created to store the results of hard sql queries

Yes, I could just use redis for this, but I wanted to try it myself as an exersize
generate the git version from the repo, and cache in file
allow setting the gitdir to whatever in version getter class
bugfix: adjust graph width to make thing sline up better
some css refactoring
changes to the title/heading
bugfix: use old style file write method for 1.8 compat
bugfix: rates were being calc'd incorrectly
bugfix: get git version even if there are no tags
update deploy script to send to the reddit-stream dir
license file added