use json if the import of simplejson fails

pyweb/djextdirect/formprovider.py

@@ -15,7 +15,10 @@
  *  GNU General Public License for more details.
 """
 
-import simplejson
+try:
+	import simplejson
+except ImportError:
+	import json as simplejson
 import functools
 
 from django      import forms

pyweb/djextdirect/provider.py

@@ -15,7 +15,10 @@
  *  GNU General Public License for more details.
 """
 
-import simplejson
+try:
+	import simplejson
+except ImportError:
+	import json as simplejson
 import inspect
 import functools
 import traceback