webproject: Make *Extra views to render templates on post

Astakos used to render the templates for both 'GET' and 'POST' methods.
The previous helper views that the newer Class-based ones replaced, did
support this. Extend the class-based helpers to render the template on a
'POST' request, as if it was a 'GET' one.

snf-webproject/synnefo/webproject/views.py

@@ -27,6 +27,9 @@ def get_context_data(self, **kwargs):
         context.update(self.extra_context)
         return context
 
+    def post(self, *args, **kwargs):
+        return self.get(*args, **kwargs)
+
 
 class ListViewExtra(ListView):
     """ ListView subclass that supports extra_context. """
@@ -37,6 +40,9 @@ def get_context_data(self, **kwargs):
         context.update(self.extra_context)
         return context
 
+    def post(self, *args, **kwargs):
+        return self.get(*args, **kwargs)
+
 
 class DetailViewExtra(DetailView):
     """ DetailView subclass that supports extra_context. """
@@ -46,3 +52,6 @@ def get_context_data(self, **kwargs):
         context = super(DetailViewExtra, self).get_context_data(**kwargs)
         context.update(self.extra_context)
         return context
+
+    def post(self, *args, **kwargs):
+        return self.get(*args, **kwargs)