fix formatting

WIP on #216

ippisite/ippidb/models.py

@@ -898,7 +898,7 @@ class Compound(AutoFillableModel):
         # if compound is not linked to any CompoundAction this is
         # because it was dereferenced because of duplication by
         # `replace_compound_references`
-        if self.compoundaction_set.count()==0:
+        if self.compoundaction_set.count() == 0:
             return False
         for ca in self.compoundaction_set.all():
             if ca.ppi.contribution_set.filter(validated=False).exists():