Added FAQs (model, controller, admin page, migration, views)
Faq: add validators and rspec tests
Gemfile: add lorem ipsum generator to development group
rake: add generator for some fake FAQs
faq: allow markdown in answers text
Merge branch 'faq-206'
.env.sample: add EMAIL_SENDER_ADDRESS
Gemfile: remove meta_search

I fail to see any users of this gem.
layout: fix megadrop shadow box

There's a CSS bug that is visible in FF 27.0.1 but not in Chrome Version
33.0.1750.152 under Linux.

The mega-drop div casts a thin line at its top edge, causing a grey
barrier across the entire screen width. I'm by no means a CSS expert,
but tests show that setting the left and bottom box shadow width to
unequal numbers makes the problem disappear.
Merge branch 'cleanups'
Commodity: add models to allow factorization of hard-coded commodities

Add the following models:

 * CommodityGroup: a container for commodities, such as 'vegetable'
 * Commodity: a commodity
 * Translation: polymorphic model that can be applied to any other model
   in order to provide I18n support (currently used for CommodityGroup
   and Commodity).
Commodity: add rake task to create commodities, commodity group and translations
commodities: add controller for json output
commodity: add has_and_belongs_to_many association between farms and commodities