Make new patch creation form actually save newly entered data

In fc16044 the patch creation form was based on the edit form. This
worked fine, but the newly added fields were not actually saved in the
database (oops). This fixes that.

Related to #16

Author: JelteF

pgcommitfest/commitfest/models.py

@@ -141,7 +141,7 @@ class Patch(models.Model, DiffableModel):
 
     # Datestamps for tracking activity
     created = models.DateTimeField(blank=False, null=False, auto_now_add=True)
-    modified = models.DateTimeField(blank=False, null=False)
+    modified = models.DateTimeField(blank=False, null=False, auto_now_add=True)
 
     # Materialize the last time an email was sent on any of the threads
     # that's attached to this message.

pgcommitfest/commitfest/views.py

@@ -566,11 +566,7 @@ def newpatch(request, cfid):
     if request.method == "POST":
         form = NewPatchForm(data=request.POST)
         if form.is_valid():
-            patch = Patch(
-                name=form.cleaned_data["name"], topic=form.cleaned_data["topic"]
-            )
-            patch.set_modified()
-            patch.save()
+            patch = form.save()
             poc = PatchOnCommitFest(
                 patch=patch, commitfest=cf, enterdate=datetime.now()
             )