Updated the footer

Leaflet in the footer was hyperlinked to the older website which is currently not available. Updated to the current one.
Update
Added the leaflet beta url
Deleted buffer files
Added the image upload control
Leaflet controls added to modify images
Added rotate and distort functionality, organized content
Added documentation
Synced the fork with the public lab fork
proposed anonymous edit lock for non-anonymously created maps
fixed edit lock code
no updating maps description or location unless youre logged in
Merge branch 'master' of github.com:publiclab/mapknitter
sidebar banner tweak
continued rails 3 debugging
Merge branch 'master' of https://github.com/publiclab/mapknitter into rails3
migrate openid identity_urls
seems to be running.... after lots and lots of fixes/tweaks