euscan: Refactored all management commands

Management commands are refactored to have the logic moved from the
commands themselves to a separated function in order to make them easily
convertible into Celery tasks

Commands are renamed to be modules importable from other python scripts

Signed-off-by: volpino <fox91@anche.no>

euscanwww/djeuscan/management/commands/regen_rrds.py

@@ -0,0 +1,30 @@
+from django.core.management.base import BaseCommand
+from djeuscan.models import HerdLog, MaintainerLog, CategoryLog, WorldLog
+from djeuscan import charts
+
+
+def regen_rrds():
+    """
+    Regenerates the rrd database
+    """
+    for wlog in WorldLog.objects.all():
+        charts.rrd_update('world', wlog.datetime, wlog)
+
+    for clog in CategoryLog.objects.all():
+        charts.rrd_update('category-%s' % clog.category,
+                          clog.datetime, clog)
+
+    for hlog in HerdLog.objects.all():
+        charts.rrd_update('herd-%d' % hlog.herd.id, hlog.datetime, hlog)
+
+    for mlog in MaintainerLog.objects.all():
+        charts.rrd_update('maintainer-%d' % mlog.maintainer.id,
+                          mlog.datetime, mlog)
+
+
+class Command(BaseCommand):
+    _overlays = {}
+    help = 'Regenerate rrd database'
+
+    def handle(self, *args, **options):
+        regen_rrds()