Enable job board admins to add custom roles

[BGordts]

I started on a page like this called 'custom_role' in Bubble.

Should be able to do the following things:

• Add a custom company
• Add a custom role (after selecting the custom company)
• Remove / edit custom roles / companies

To discuss

• How to embed this without having ppl to log in -> send pasword as get parameter
• How to do all custom fields -> probably best to just link them to the role page to do it there