Close #44

Since Drupal threats the taxonomy terms as entities, they can not be
exported using features.  The files in the folder 'taxonomy_terms' contain
all the taxonomy terms, and must be imported manually after the Drupal
installation.
Merge branch 'enhancement-#44' into develop
Close #43

Add LandDebate content types, permissions and views.  Also updated the theme to
include a preliminary version of the LandDebate.
Add first configuration steps.

Added the first configuration steps for the LandPortal.  The
configuration guide is not finished yet.  See #45.
Close #43, close #40, close #42.

Added the LandDebate structure, the search options in the organizations
view and the Twitter widget.  The views are not finished yet and they
require heavy styling to make them look good.
Merge branch 'enhancement-#43' into develop