Container name length limit option (#28)

* Add option and feature to limit name length

* Add option and feature to remove a string from the name

Role names often have a common prefix that obscures more useful
information, so this helps to keep names short and still unique

* Fix bad merge/race condition

This might have just been a bad merge, but I think it was a
race condition that didn't happen on Windows. On Linux, the
stored addon config wasn't loaded before the listener functions
executed, so I needed to explicitly fetch them

---------

Co-authored-by: Andy Cahill <[email protected]>