User interaction

[bmatschke]

Users should get a standard way to:

• discuss collections
• rate collections (e.g. +1), contributions (e.g. +1)
• report misuse (as github issue, or via a form, or email)
• simple user feedback (email, google form, github issue)
• wanted board
• mark a collection or number as wanted (such that users who find the number in a way asked for can notify the former user)
• enter less globally relevant numbers as wanted:
  • such numbers don't need to be in numberdb-data
  • better just to have a list, say as real ball, linked to user(s) who want a good description of this number
  • normal users can browse the list of wanted numbers, and also find wanted numbers in the search bar

(Split this into sub-issues)