Community voting system

[cristiroma]

We need a voting system for the upcoming elections.

1. users who paid membership fee are eligible for voting
2. members are able cast a single vote during elections
3. TODO

[voidberg]

Let's make this an umbrella issue and create / reference sub tickets for the various issues. Feel free to split this into two umbrella tickets, one for membership and one for voting.

• - Issue Community paid membership #7 - As a user I want the ability to pay for membership that is valid for a year.
• - Issue N/A - As a user I want to be reminded when said subscription is coming to an end.
• - Issue N/A - As an admin I want to be able to start a poll (e.g. for elections).
• - Issue N/A - As an admin I want to be able to set an end date for that poll.
• - Issue N/A - As an admin I want to be able to notify all current members that a new poll is happening.
• - Issue N/A - As an user I want to be able to vote in a poll as long as my membership is valid.
• - Issue N/A - As a user I should not be able to view poll results until the poll is closed.