This naming is clearer as to the intended effect. Changes include:
- A migration to rename all permissions
- Updating the seed migration to use the original naming from the start
- Replacing usage of the old names with new names in code
- Throwing warnings when the old names are used.
In the filterer refactor for ListPostsController, the filter key was changed to `author` for consistency with the AuthorFilterGambit used in discussions. This commit adds a deprecated `user` filter back in for a release to allow for a graceful transition
