Fix small i18n typos

cms/static/js/spec/views/pages/group_configurations_spec.js

@@ -74,10 +74,8 @@ define([
 
             it('I do not see notification message if the model is not changed',
             function() {
-                var expectedMessage = [
-                        'You have unsaved changes. Do you really want to ',
-                        'leave this page?'
-                    ].join(''),
+                var expectedMessage = 
+    		        'You have unsaved changes. Do you really want to leave this page?',
                         view = renderPage(),
                         message;
 

cms/static/js/views/pages/group_configurations.js

@@ -36,8 +36,7 @@ function ($, _, gettext, BaseView, GroupConfigurationsList) {
 
             if(dirty) {
                 return gettext(
-                    'You have unsaved changes. Do you really want to ' +
-                    'leave this page?'
+                    'You have unsaved changes. Do you really want to leave this page?'
                 );
             }
         }

common/lib/xmodule/xmodule/combined_open_ended_module.py

@@ -204,10 +204,10 @@ class CombinedOpenEndedFields(object):
         scope=Scope.user_state
     )
     old_task_states = List(
-        help=_("A list of lists of state dictionaries for student states that are saved."
-               "This field is only populated if the instructor changes tasks after"
-               "the module is created and students have attempted it (for example changes a self assessed problem to "
-               "self and peer assessed."),
+        help=_("A list of lists of state dictionaries for student states that are saved. "
+               "This field is only populated if the instructor changes tasks after "
+               "the module is created and students have attempted it (for example, if a self assessed problem is "
+               "changed to self and peer assessed)."),
         scope = Scope.user_state
     )
     task_states = List(

lms/djangoapps/shoppingcart/processors/CyberSource2.py

@@ -335,7 +335,7 @@ REASONCODE_MAP.update(
         '200': dedent(_(
             """
             The authorization request was approved by the issuing bank but declined by CyberSource
-            becouse it did not pass the Address Verification System (AVS).
+            because it did not pass the Address Verification System (AVS).
             """)),
         '201': dedent(_(
             """