Removed a redundant change-element from the journals-xml

app/views/api/v2/planning_element_journals/_journal.api.rabl

@@ -37,10 +37,9 @@ node :user do |journal|
 end
 
 node :changes do |journal|
-
     journal.changed_data.map do |attribute, changes|
       user_friendly_attribute, old, new = user_friendly_change(journal, attribute)
-      {change: {
+      {
           technical: {
               name: attribute.to_s,
               old:  changes.first,
@@ -51,7 +50,7 @@ node :changes do |journal|
               old:  old,
               new:  new
           }
-      }}
+      }
     end
 
 end

spec/views/api/v2/planning_elements/show_api_json_spec.rb

@@ -234,10 +234,10 @@ describe 'api/v2/planning_elements/show.api.rabl' do
 
     it 'reports the changes' do
       expected_json = {name: "subject", old: "old_subject", new: "new_subject"}.to_json
-      should be_json_eql(expected_json).at_path('planning_element/journals/0/changes/0/change/technical')
+      should be_json_eql(expected_json).at_path('planning_element/journals/0/changes/0/technical')
 
       expected_json = {name: "project_id", old: 1, new: 2}.to_json
-      should be_json_eql(expected_json).at_path('planning_element/journals/1/changes/0/change/technical')
+      should be_json_eql(expected_json).at_path('planning_element/journals/1/changes/0/technical')
 
     end
   end