consolidated jquery versions for common, impala, discovery, mobile to all use 1.6.4 (bug 692138)

settings.py

@@ -523,7 +523,7 @@ MINIFY_BUNDLES = {
     'js': {
         # JS files common to the entire site.
         'common': (
-            'js/lib/jquery-1.4.2.js',
+            'js/lib/jquery-1.6.4.js',
             'js/lib/underscore.js',
             'js/zamboni/browser.js',
             'js/amo2009/addons.js',
@@ -666,7 +666,7 @@ MINIFY_BUNDLES = {
             'js/zamboni/outgoing_links.js',
         ),
         'zamboni/discovery': (
-            'js/lib/jquery-1.4.2.js',
+            'js/lib/jquery-1.6.4.js',
             'js/lib/underscore.js',
             'js/zamboni/browser.js',
             'js/zamboni/init.js',
@@ -729,7 +729,7 @@ MINIFY_BUNDLES = {
             'js/zamboni/localizers.js',
         ),
         'zamboni/mobile': (
-            'js/lib/jquery-1.5.js',
+            'js/lib/jquery-1.6.4.js',
             'js/lib/jqmobile.js',
             'js/lib/jquery.cookie.js',
             'js/lib/jquery.pjax.js',