Merge pull request #2304 from gitlabhq/fix_postgres_notes

.travis.yml

Gemfile

Gemfile.lock

app/models/merge_request.rb

app/models/note.rb

app/models/project.rb

app/roles/note_event.rb

app/views/notes/_common_form.html.haml

app/views/notes/_per_line_form.html.haml

config/database.yml.postgresql

...grate/20121218164840_move_noteable_commit_to_own_field.rb

db/migrate/20121219095402_indices_for_notes.rb

db/schema.rb

features/support/env.rb

spec/models/merge_request_spec.rb

spec/models/note_spec.rb

spec/requests/issues_spec.rb