Show modal after beta access signup

The beta access form is now in it's own html page. this makes it easier
to work with djangos form validation with reloading the whole page.

datacenterlight/forms.py

@@ -7,7 +7,7 @@ class BetaAccessForm(forms.ModelForm):
     email = forms.CharField(widget=forms.EmailInput())
 
     class Meta:
-        fields = ['email']
+        fields = ['name', 'email']
         model = BetaAccess