Added template tag for photo thumb on PS widgets

. #185 #181 #182
Merge branch 'develop' of github.com:akvo/akvo-rsr into develop
Fix TC tests for the move of TEST2 to test-vm

Fix expected values for HostAlias.TEST2 and HostPathValues.TEST2
Repacked JS files
Merge branch 'develop' of github.com:akvo/akvo-rsr into develop
Partner sites widgets available

- First batch of widgets crafted for partner sites
- Old map widget updated to match new widgets
- Get a widget pages updated to support the light/dark style
- Fixed faulty link causing donation flow to break.
- Fixed issue when accessing the thank you page without proper
  queryparameter (now render a 404 instead of 500 error)

. #193 #185 #182 #182 #154
Updated partner sites widgets styles

. #193 #185 #182 #182 #154
PS widgets don't show scrollbars

Partner sites widgets now don't show
a vertical scrollbar in Chrome.

. #154 #182 #185
Merge branch 'develop' into issue/193

Conflicts:
	akvo/mediaroot/ps_widgets/w170px.css
PS project list widget

Added partner site project list widget. Widget also added
to the get a widget pages.

. #186
Added spacing to PS list widget header

. #186
[#121] Add unique constraint to Organisation.iati_org_id

Add migration for the constraint

Bugfix in BudgetItem.get_label()
[#121] Fix borked migrations

Replace migration 0032 to change empty string values in
Organisation.iati_org_id to NULL values to prepare for the unique
constraint on the field.

Add schema migration 0033 to set the unique constraint on
Organisation.iati_org_id and to create the InternalOrganisationID model.

Add data migration 0034 to add custom data to Cordaid and DGIS
organisation objects
Fix for #199 increased BenchmarkName limit from 50 to 80
Actually added migration from previous commit.
[#207] Add notes field to PartnerSite model

Add PartnerSite.notes field to models.py

Add PartnerSiteAdmin.restricted_fieldsets leaving out the notes field
and add methods to PartnerSiteAdmin to choose which fieldsets to use
based on user permissions for the PartnerSite model.

Add PartnerSiteAdmin.get_list_display() to only show the notes field in
the list view for users with privileges as above.

Add migration for the PartnerSite.notes field.
[#207] Add 'enabled' column to the admin list view for ParterSite
[#207] Code comment fix
[#203] Add PartnerType model

The PartnerType is a helper model containing one object for each partner
type organisations can assume in a Partnership.

Add the model definition to rsr.models.

Add Organisation.partner_types many-to-many field that enumerates the
types of partner a certain organisation can assume.

Add schema migration 0037 for PartnerType.

Add data migration 0038 that populates Organisation.partner_types based
on the current partnerships for each organisation.
[#203] Add object creation for PartnerType

Add signal to rsr.management that adds the objects for each partner
type to PartnerType if they are not already present