Update, date, or remove "Collaborative projects" page

[mattwthompson]

https://openforcefield.org/science/collaborative-projects/

This page ranks highly in Google searches:

but is probably out of date. I have no idea if these are active projects or something that was put together several years ago. They don't seem to fully describe the current scope of collaborative projects; in this case it miscommunicates how much our software supports crystals (it makes no effort to) and whether or not we're working on it (I'm not sure we are). I suggest any of

• Update the page to track current projects and commit to maintaining it (i.e. quarterly updates) in perpetuity
• Tag each project with dates to represent when they were conceived and include current status/progress
• Remove this page altogether