Fix onboarding library route model keys
Simplify anime/manga index sorting
Fix n+1 query.
Respect sfw_filter setting in Anime#index.
add versions table, and model
add versionable concern, allow a user to edit an anime entry (certain fields)
create index page of pending edits
add link to pending page to kotodama
add pending.show page
implement approve/reject of edits
limit pending page to staff only
Implement loader on onboarding lib page
Refactor totalRatings to fix bug on loading
Refactor filtering to fix rate bug for search results
Embed associations for now. (This is temporary)
Add MAL import to onboarding library page
use psql 9.3 for json data type on travis
add controller tests
add model test, add test for creating an edit
renamed 'pending' route to 'edits', fixups based on @vikhyat's feedback