Develop prototype for multi-vote

[macterra]

Develop a new github app that implements these use cases:

• As a sponsor (owner)
  • Create a new multi-vote from an issue
  • Set a deadline
  • Specify eligible voters by group
  • Edit options
  • Open for voting
• As a voter
  • Vote on options
  • Change votes
  • Include a comment
• As a player
  • View the current state of the vote
  • View the history of the vote