Feature request: Move themes/

[skrolikowski]

Describe the solution you'd like

Move storage/themes to storage/app/themes For fusioncms/fusioncms repo.

Additional context

Make sure requests made on this folder are updated as well.

Feature request checklist

• This is a single feature (i.e. not a re-write of the entire CMS)
• The title starts with "Feature request: " and is followed by a clear feature name (Ex: Feature request: add konami code to control panel)
• I have searched for existing issues and to the best of my knowledge this is not a duplicate