Rename guardian field to owner
Merge branch 'develop' of https://github.com/allegro/ralph_assets into users
Merge migrations from 0009 to 0012 into one file, and rename guardian to owner in asset
Merge pull request #128 from quamilek/fix-migrations

Merge migrations from 0009 to 0012 into one file, and rename guardian to owner in asset
Merge branch 'develop' of https://github.com/allegro/ralph_assets into develop
Tests - instead of AssetCategory.id there is AssetCategory.slug now
Merge migrations from 0015 to 0010