organisation: update templates and tests for many themes in working g…

…roups

Since themes are now in a many to many relationship with working
groups that must be reflected in both templates and tests.

foundation/organisation/templates/organisation/theme_detail.html

@@ -16,10 +16,10 @@ <h2>{{ object.name }}</h2>
   <div class="main col-md-9 col-md-push-3">
     {{ object.description|markdown }}
     <div class="row">
-      {% if object.workinggroup_set.all %}
+      {% if object.workinggroups.all %}
       <div class="col-md-6 col-sm-12">
         <h3>Working Groups</h3>
-        {% for group in object.workinggroup_set.all %}
+        {% for group in object.workinggroups.all %}
         <h4>
           <a href="{{ group.homepage_url }}" target="_blank">
             {{ group.name }}

foundation/organisation/tests/test_views.py

@@ -299,16 +299,16 @@ def setUp(self):  # flake8: noqa
             name='Kernel people',
             slug='kernel-people',
             description='Linus disciples',
-            homepage_url='http://kernel.org',
-            theme=self.hats)
+            homepage_url='http://kernel.org')
+        self.kernel.themes.add(self.hats)
 
         self.i18n = WorkingGroup.objects.create(
             name='Internationalisation',
             slug='i18n',
             description='I prefer my own language thank you',
             homepage_url='https://fedoraproject.org/wiki/I18N',
-            theme=self.hats,
             incubation=True)
+        self.i18n.themes.add(self.hats)
 
         self.beefy = Project.objects.create(
             name='Beefy Miracle',
@@ -357,18 +357,16 @@ def setUp(self):  # flake8: noqa
             slug='csv-on-the-web',
             description='Definition of a vocabulary for describing tables',
             homepage_url='http://www.w3.org/2013/csvw/',
-            theme=self.theme,
-            incubation=False
-            )
+            incubation=False)
+        self.csv.themes.add(self.theme)
 
         self.government = WorkingGroup.objects.create(
             name='Government Linked Data',
             slug='government-linked-data',
             description='Help governments around the world publish their data',
             homepage_url='http://www.w3.org/2011/gld/',
-            theme=self.theme,
-            incubation=True
-            )
+            incubation=True)
+        self.government.themes.add(self.theme)
 
     def test_workinggroup_list(self):
         response = self.app.get(reverse('working-groups'))