Resolve "Support import from MySQL"

Closes #4 (closed)

aleksis/apps/untis/management/commands/untis_import_mysql.py

+from django.core.management.base import BaseCommand
+
+from ...tasks import untis_import_mysql
+
+
+class Command(BaseCommand):
+    def handle(self, *args, **options):
+        untis_import_mysql()