Detect duplicate event comments and display an error message.
Detect a duplicate talk comment and display an error message.
Merge branch 'master' into duplicate-comment
Display a nice error if the comment fails the API spam check.
Add the Forwarded header (RFC 7239) to all requests. This is useful for the spam check on comments.
JOINDIN-476 Fixed centering the location on a map by replacing old ulayers js with leaflet
JOINDIN-476 Fixed centering the location on a map by replacing old ulayers js with leaflet
JOINDIN-476 Made OpenStreetmap tile URL also available on https
Merge branch 'master' into akrabat-duplicate-comment

Conflicts:
	app/src/Event/EventController.php
Merge branch 'akrabat-spam-comments'
use the other domain name for openstreetmap tiles, it's available over SSL
Merge branch 'phpetra-map-issue'
Merge branch 'akrabat-forwarded-header'