Automate discourse posts related to project approval

[madprime]

It would be good to have automation in the project approval process with our discourse forum.

This could include some of the following features...

1. allow a project to request approval on the site (with a button), create a discourse thread automatically
2. store a link to the discourse thread (so it can be linked as project info e.g. on an activity page)
3. post a notification to discourse when a project updates requested permissions (in case this should prompt a new review)