Add score refresh to management commands + admin actions

.openshift/cron/daily/update_database

@@ -6,3 +6,5 @@ cmd=$1
 cd $OPENSHIFT_REPO_DIR
 export CLEAN=1
 nohup bin/update_all > $OPENSHIFT_LOG_DIR/update_all.log 2>&1 &
+
+./manage.py refresh_scores

memopol_scores/management/commands/refresh_scores.py

+from django.core.management.base import BaseCommand
+
+from ...models import RepresentativeScore
+
+
+class Command(BaseCommand):
+    help = 'Recomputes all scores'
+
+    def handle(self, *args, **options):
+        self.stdout.write('Refreshing scores... ', ending='')
+        self.stdout.flush()
+
+        RepresentativeScore.refresh()
+
+        self.stdout.write('done')

memopol_scores/models.py

+from django.contrib import admin
 from django.db import connection, models
+from django.http import HttpResponseRedirect
 
 from representatives.models import Representative
 from representatives_votes.models import Dossier, Vote
@@ -46,3 +48,12 @@ class RepresentativeScore(models.Model):
     def refresh(cls):
         with connection.cursor() as cursor:
             cursor.execute('SELECT refresh_representative_scores();')
+
+
+def refresh_scores(modeladmin, request, queryset):
+    RepresentativeScore.refresh()
+    return HttpResponseRedirect(request.META.get('HTTP_REFERER'))
+
+
+refresh_scores.short_description = 'Refresh representative scores'
+admin.site.add_action(refresh_scores, 'refresh_scores')