[db] added basic migration for org and participant
addes missing reference column
[db] added proposal
[db, model] cleanup for proposal
[db] added vote
adds link
added documents
adds sections
updates section to include position and associations
fixed typo and added paragraphs
Merge remote-tracking branch 'fotoverite/master'

Conflicts:
	app/models/document.rb
	app/models/link.rb
	app/models/organization.rb
	app/models/paragraph.rb
	app/models/participant.rb
	app/models/proposal.rb
	app/models/section.rb
	app/models/vote.rb
	db/migrate/20130102195611_create_participants.rb
	db/schema.rb
	spec/models/document_spec.rb
	spec/models/link_spec.rb
	spec/models/organization_spec.rb
	spec/models/paragraph_spec.rb
	spec/models/participant_spec.rb
	spec/models/proposal_spec.rb
	spec/models/section_spec.rb
	spec/models/vote_spec.rb
schema likes org id to be lower...?
allow setting db creds via env