Feature request: file editor based on file type

[thhck]

Penny already has file previewer based on the resource type. It could be handy to also have file editor based on their type.

The main one would bit a simple text editor, to edit RDF file edit: penny already has a simple text editor

I can also image:

• something like react-md-editor for markdown file
• monaco for code file
• a profile editor for /profile/card to edit vcard info ( could be used in registration too #5 )