bump version 2.0.beta1
Hotfix serialization_scope for production env
(wip) Import multiple layers from data source

* Begin using interactors from collectiveidea
* Add angular to backend
* Add (unstable) api for mass import
Change url of legends for mapserver

Mapserver needs the service wms to be specified in the url to work
Change routes in frontend

Move from catching every url to pages controller to catching specific
urls that are actually used. Cleaner way, not 500 on 404.