delete all papers & references before asserting there are 0
add model for citation groups
citation groups should have many references, not papers
add fixtures for papers
fix test for citation_group creation
add automated ordering for references in a citation group
do not reinvent the acts_as_list gem
cascade delete citation_groups to citation_group_reference
remove tests for count, which do not work with fixtures
Merge branch 'master' into feature/citation_groups_model

Conflicts:
	db/schema.rb
fix test to save Paper.count
use acts_as_list in citation_groups
Merge pull request #5 from ploslabs/feature/citation_groups_model

 Feature/citation groups model