Add users, orgs, and collections to app

[Prospector]

Still needs:

• [ ] Backend routes instead of temporary frontend fetches (assigned @Geometrically)
  • [ ] Fetching a collection from ID
  • [ ] Projects from collection ID (afaik does not exist in labrinth, but could maybe be made for app?)
  • [ ] Organization from ID
  • [ ] Projects from org ID
  • [ ] Projects from org ID
  • [ ] Projects from user ID
  • [ ] Organizations from user ID
  • [ ] Collections from user ID
  • [ ] Write routes for collections would also be useful in future?
  • [ ] Not implemented yet but read/write routes for followed projects as well?
• [ ] Fix breadcrumbs for user, collection, and org pages (I couldn't really understand how they work, assigned @Geometrically)
• [ ] Bug testing

Closes MOD-13 Closes #581 Closes #1248

[worldwidepixel]

Just dropping my useless two cents that "Projects from collection ID" would be a very useful addition to Labrinth!

[Prospector]

Will be reimplemented in the future, this branch is too far gone