Side task: paginate Projects index with Kaminari.
Added associations between vote, user and project, at model level.
Basic vote/unvote working in UI.
Added missing project#unvote tests.
Minor: change thumbs to stars for votes in UI.
Added "vote"/"votes" label to UI, with pluralisation.
Merge pull request #20 from glenn0/add_likes_to_project

Add stars to project