Roll up migrations up to 113

According to [upgrade policy](https://github.com/publify/publify/wiki/Upgrading), old migrations are rolled up.

Some techniques used:

* To generate a clean schema up to 113:
  `rake db:drop db:create db:migrate VERSION=113`
* All name: options for indexes were removed
* To check match of the generated schema after the rollup:
  `rake db:drop db:create db:migrate`, followed by `git diff`