Avoid migration error for users without places.
Collection errors before migration fails.
Fix comparing phone numbers in migration.
Show actual contact data in forms instead of dummy data.
Store additional user info in cookie to display when user creates a new entry.

This is a temporary solution and should be replaced with an additional API endpoint to get the info probably.
Merge branch 'feature/ownerships-frontend-bugfix'
Add api endpoint for user data.
Merge branch 'feature/ownerships-frontend-bugfix'
Gemfile: add redcarpet markdown gem
TextBlocks: add db migration, model and spec
TextBlocks: add controller, admin page, layout helper and markdown view
rake/seeds: generate textblocks

Add app/templates/text_blocks, and use rake receipt to generate text
blocks.
Remove pages controller, re-route /terms, /imprint and /about
Merge branch 'refs/heads/zonque-cms'
Add missing authorization to read Place models for guest users.
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