combined PR 12 and 11 (php tags and relative pathing)

merged PR #12 and #11 for easier merge into master
-  make all hrefs relative instead of absolute paths so this
        doesn't have to live in /
     - fix php tags to all be <?php instead of some <? -
	   <? requires specific server side config.


since these two are very conflicted and don't merge well together, I've resolved them against current master.  will close https://github.com/etsy/dashboard/pull/12 and https://github.com/etsy/dashboard/pull/11