SSF : Overlays on the map; project_project controller changes

* Adding hazard, theme, countries to the deployments form
* Permission to anonymous to create task, contributor role
* Deployments, members overlay on the map
* Inline login form
For the zones/regions of the world that organisations belong into. That is if we consider to map all orgs to e.g. continents, or sub-continent regions in order to filter by them.
The original purpose was to be able to send out alerts to a specific zone/region of the world without selecting a particular org (IFRC) - I don't see the point in Sunflower, though.