allow to put foodcoop config in database
add foodcoop configuration screen
don't fail in foodsoft_config without database,

and use proper config defaults so that configuration editing has
sensible default values
hide protected keys from config
let plugins define their own foodcoop-config defaults
allow to specify (un)checked values for config boolean

Conflicts:
	app/helpers/admin/configs_helper.rb
allow protected keys to be set/unset + config_db tests
fix deprecation warning
specify timezone in configuration (closes foodcoops#282)
make config_db work on Rails 3
add foodcoop-adam-specific config_db screens
Add membership options to configuration screen
protect shared supplier assets path
finish signup config screen + show signup only    when possible
add foodsoft_config protection whitelisting

Conflicts:
	lib/foodsoft_config.rb
allow to configure currency (closes foodcoops#258)
normalize values recursively before saving config values
fix config issue with nested hash

Conflicts:
	lib/foodsoft_config.rb
fix config value override

Conflicts:
	app/helpers/admin/configs_helper.rb
add page break to config screen