I also did a bit of cleanup while I was here and noticed things that I thought could be improved in the files (wording changes, removing tests that aren't quite necessary, etc.) Take a look and make sure I didn't actually remove anything important!
* undelete-update recently soft-deleted custom roles
* remove my TODO statements
* check values on soft-delete-recreate for custom role tests
* final fixes to make sure delete works; return read() when updating to 'create'
* check for non-404 errors for custom role get
* add warnings to custom roles docs
