* BE proposal contribution tracking
* FE proposal contribution tracking
* validate contributions
* make sure we catch errors in the 'confirmation' listener
* remove console.log
* lowercase from address compare
* remove validate_contribution_tx from post_proposal_contribution
* Add models & endpoints
* Implement proposal updates.
* Reset state on close. Add missing key. Prompt on close if they will lose stuff.
* Dont warn if they submitted.
* check in progress
* revert
* fix up API, add tests
* remove unused milestone commands
* support filtering users via proposalId
* get UI working
* refactoring / add minimum team size.
* fix proposal create API to properly support both email and account based