Use settings changed signal to update file move / rename toggles

[phw]

Summary

• This is a…
  • Bug fix
  • Feature addition
  • Refactoring
  • Minor / simple change (like a typo)
  • Other
• Describe this change in 1-2 sentences:

Problem

This makes use of @rdswift's recent settings changed signal (#2567) to handle updating the filenaming toggles in Options menu

Solution

Action

There are additionally issues with the profiles. When switching profiles via menu the toggles don't update accordingly. This issue is also present on the current 2.x release.

I started looking into this, but encountered additional profile issues on the master branch:

1. Profile specific settings are not available directly after startup, hence the toggles don't show the settings properly. The profile groups are only properly initialized after the option dialog has been opened the first time. This is due to Move option declarations to picard/options.py and introduce const.defaults #2433 moving the initialization of profile groups to the option pages constructors.
2. When opening the option dialog multiple times the settings in the profile configuration tree view duplicate each time.

I'll look into this in more detail in the new year. Because this is more complex I would like to keep this out of this more simple PR.

[zas]

LGTM

[zas]

LGTM