Add new command to check if domains are valid

salt_observer/management/commands/checkdomainvalidity.py

+from django.core.management.base import BaseCommand
+
+from salt_observer.models import Domain
+
+
+class Command(BaseCommand):
+    help = 'Check all domains if they are valid'
+
+    def handle(self, *args, **kwargs):
+        ''' Check every domain '''
+
+        for domain in Domain.objects.all():
+            domain.check_if_valid()