do safe simplejson import in common and use this imported copy in the 2

other places where its used.

deluge/common.py

@@ -29,6 +29,12 @@ import os
 import time
 import subprocess
 import platform
+import sys
+	
+if sys.version_info > (2, 6):
+    import json
+else:
+    import simplejson as json
 
 import pkg_resources
 import xdg, xdg.BaseDirectory

deluge/config.py

@@ -30,16 +30,12 @@ Deluge Config Module
 import cPickle as pickle
 import shutil
 import os
-import sys
-
-if sys.version_info > (2, 6):
-    import json
-else:
-    import simplejson as json
 
 import deluge.common
 from deluge.log import LOG as log
 
+json = deluge.common.json
+
 def prop(func):
     """Function decorator for defining property attributes
 

deluge/ui/web/server.py

@@ -23,7 +23,6 @@
 #
 
 import os
-import sys
 import time
 import locale
 import shutil
@@ -34,11 +33,6 @@ import logging
 import tempfile
 import pkg_resources
 
-if sys.version_info > (2, 6):
-    import json
-else:
-    import simplejson as json
-
 from twisted.application import service, internet
 from twisted.internet.defer import Deferred
 from twisted.web import http, resource, server, static
@@ -52,6 +46,7 @@ from deluge.ui import common as uicommon
 from deluge.ui.client import client, Client
 from deluge.ui.tracker_icons import TrackerIcons
 log = logging.getLogger(__name__)
+json = common.json
 
 # Initialize gettext
 try: