Email polling

[jstoone]

About

Currenly you have to manually refresh the inbox to get new emails, this is a bit irritating.

Solution

Figure out a way to properly do some kind of polling on the frontend. We should only poll for messages older than the last message.

Tasks

• [ ] Implement a date filter in nova-mailman.index
  • [ ] Only returns emails stored after the given date
• [ ] Create a timeout that polls for changes every 5 seconds
• [ ] Append new emails to the list of messages