Date browsing ability added to the map

Currently looking at the map shows a user everything, but with no way to easily see what’s coming up and when.

It would be great to have a coming up filter which allows a user chose to switch between showing posts relating to only the next week/month/year. The overview list next to the map already has a filter system which also responds to the users location, so i would suggest it’s most logical to build it into this.

@msgfxeg would you like to have a go at this one?