Org search index
Fix display of tree view in firefox.
Add "add this" social sharing buttons to org/activity pages.
Display a count of the number of organisations returned by the filters.
Add a subtle border to filters so they don't merge into the white.
Fix for request to join org
Search input on index
Org/project search
Search bar icon
Project Index page search feature specs
Organisation index wording
Homepage navigation change
Merge 'search' branch into interim-nav.

The search branch was the feb-2013-changes branch but with the CMS
changes removed (rebased) out.

Conflicts:
	app/assets/stylesheets/home.css.scss
Rename css classes for home page.
Break out map CSS into its own file.
Fixing SCSS indentation and reordering some clauses for legibility.
Changing map page layout, to allow toggling filters.

Still not finished:

TODO

- Fix up navbar (at top of screen)
  - Fix orange key-line
  - Add search form
- Fix Responsiveness
- Fix hide link
- Add legend
- Make toggle bar display the count again & a mini CTA to inspire people
  to toggle it.
Merge in tree vis changes & social sharing to the new nav-bar branch.

Conflicts:
	app/assets/javascripts/tree_view.js
	app/assets/stylesheets/tree_view.css.scss
	app/views/organisations/show.html.haml
	app/views/projects/show.html.haml
Basic positioning of hide-panel link.
Add search form to home page (needs layout/styling set)