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
But still, the "themes" for the deployment of a software are very different from the themes of humanitarian projects, aren't they? I mean, Sahana doesn't get used to improve sanitation, or to reduce child mortality...I see this rather limited to a subset (or even a specific set), otherwise it will be hard to analyse even that.

It is indeed about the "purpose of the deployment" rather than about the themes of the projects the user organisation is working with - or am I wrong?

Seeing what we are helping users with is certainly interesting - but most 3W data is about what users are helping others with, not what they use our software for. If they are using our software to manage volunteers, then the theme of the "Sahana deployment" can be pretty much everything they are engaged in, and yet not telling us what they use Sahana for in their work. A theme "volunteer management" plus a sector "disaster response" would be much more enlightening.