[#945] Moved IATI activity ID to the Project model

- Added field 'Project.iati_activity_id'
- Moved data from Partnership to Project
  - If the project has a 'sync_owner', use the IATI activity ID of the sync owner
  - Else, use the IATI activity ID of one of the support partners
  - Leave empty if all of these do not exist
- Added IATI activity ID field to Project admin
- Removed IATI activity ID field from Partnership inline
- Added IATI activity to the project main page, if available

akvo/rsr/admin.py

@@ -311,6 +311,7 @@ def clean_partner_type(self):
 
 class PartnershipInline(admin.TabularInline):
     model = get_model('rsr', 'Partnership')
+    exclude = ('iati_activity_id',)
     extra = 1
     form = RSR_PartnershipInlineForm
     formset = RSR_PartnershipInlineFormFormSet
@@ -484,8 +485,8 @@ class ProjectAdmin(TimestampsAdminDisplayMixin, ObjectPermissionsModelAdmin):
             'description': u'<p style="margin-left:0; padding-left:0; margin-top:1em; width:75%%;">%s</p>' % _(
                 u'This section should contain the top-level information about your project which will be publicly available and used within searches. Try to keep your Title and Subtitle short and snappy.'
             ),
-            'fields': ('title', 'subtitle', 'status', 'language', 'date_start_planned', 'date_start_actual',
-                       'date_end_planned', 'date_end_actual', 'donate_button', 'hierarchy'),
+            'fields': ('title', 'subtitle', 'iati_activity_id', 'status', 'language', 'date_start_planned',
+                       'date_start_actual', 'date_end_planned', 'date_end_actual', 'donate_button', 'hierarchy'),
             }),
         (_(u'Description'), {
             'description': u'<p style="margin-left:0; padding-left:0; margin-top:1em; width:75%%;">%s</p>' % _(