Replace `No due date` with `None`

app/assets/javascripts/due_date_select.js

@@ -104,7 +104,7 @@ class DueDateSelect {
       const dateObj = new Date(dateArray[0], dateArray[1] - 1, dateArray[2]);
       this.displayedDate = dateFormat(dateObj, 'mmm d, yyyy');
     } else {
-      this.displayedDate = 'No due date';
+      this.displayedDate = __('None');
     }
   }
 
@@ -132,7 +132,7 @@ class DueDateSelect {
 
   submitSelectedDate(isDropdown) {
     const selectedDateValue = this.datePayload[this.abilityName].due_date;
-    const hasDueDate = this.displayedDate !== 'No due date';
+    const hasDueDate = this.displayedDate !== __('None');
     const displayedDateStyle = hasDueDate ? 'bold' : 'no-value';
 
     this.$loading.removeClass('hidden').fadeIn();

app/views/shared/boards/components/sidebar/_due_date.html.haml

@@ -7,7 +7,7 @@
   .value
     .value-content
       %span.no-value{ "v-if" => "!issue.dueDate" }
-        = _("No due date")
+        = _("None")
       %span.bold{ "v-if" => "issue.dueDate" }
         {{ issue.dueDate | due-date }}
       - if can_admin_issue?

app/views/shared/issuable/_sidebar.html.haml

@@ -73,7 +73,7 @@
                 %span.bold= issuable_sidebar[:due_date].to_s(:medium)
               - else
                 %span.no-value
-                  = _('No due date')
+                  = _('None')
             - if can_edit_issuable
               %span.no-value.js-remove-due-date-holder{ class: ("hidden" if issuable_sidebar[:due_date].nil?) }
                 \-

locale/gitlab.pot

@@ -5966,9 +5966,6 @@ msgstr ""
 msgid "No details available"
 msgstr ""
 
-msgid "No due date"
-msgstr ""
-
 msgid "No errors to display."
 msgstr ""
 

spec/features/issues_spec.rb

@@ -775,10 +775,10 @@ describe 'Issues' do
 
             wait_for_requests
 
-            expect(page).to have_no_content 'No due date'
+            expect(page).to have_no_content 'None'
 
             click_link 'remove due date'
-            expect(page).to have_content 'No due date'
+            expect(page).to have_content 'None'
           end
         end
       end

spec/support/shared_examples/quick_actions/issue/remove_due_date_quick_action_shared_examples.rb

@@ -11,7 +11,7 @@ shared_examples 'remove_due_date quick action' do
       visit project_issue_path(project, issue)
 
       page.within '.due_date' do
-        expect(page).to have_content 'No due date'
+        expect(page).to have_content 'None'
       end
     end
   end