Merge pull request #157 from Skud/hotfix-analytics

Hotfix: don't escape HTML for analytics script
Merge pull request #165 from Growstuff/dev

Production push: new homepage, private messages, sun/shade, various small changes
Merge pull request #171 from Growstuff/dev

Production push: search nearby members, link to gravatar on settings page, other small tweaks
Added a reply link to the notifications/show page

- sets subject "Re: whatever" for PMs
- also removed "sender=N" from PM link (wtf! -- it wasn't doing anything
    but it looked bad.)
removed unused random crop code
Added reply link to notification email.

Note: this breaks DRY but we couldn't figure out how to put it in a
helper and make it useable by both the controller and the mailer.
Suggestions/help much appreciated!
fixed failing notifications tests

(our non-DRY code, which we just pasted into the mailer, was breaking
this in a roundabout way. this is a quick and not very nice fix. The
whole problem is resolved by @pozorvlak's recent "no subject" fix for
notifications, anyway.)
Delete unused helpers.
Move reply_link into a helper.

 - keep @reply_link as an instance var, for testability
 - always use fully-qualified URLs, to reduce code duplication
Added crop wrangling hints to crops form.
added validation for en_wikipedia_url
Merge pull request #196 from Growstuff/dev

Production push: search nearby by distance, connect to twitter and flickr, etc
rails g scaffold Product...
added products to seeds.rb in dev/test environments
rails g scaffold Product...
rails g scaffold Order...
only admins can mess with products/orders for now
moved member post feed to HAML
order HABTM product
added shop page at /shop