Merge pull request #3 from Polyrhythm/master

Instagram support
Finished off Ryan's home page Instagram stuff and updated the rides page.
Added analytics tracking code.
Merged the rides and calendar pages. Upgraded to using the calendar API which is much much better. Better presentation and more info for calendar events and it actually works properly now which is nice. Some style changes too.
Added link to the calendar
Removed redundant file and fixed twitter link