Locale for Edit and Remove due date issue (#4802)

options/locale/locale_en-US.ini

@@ -779,8 +779,8 @@ issues.error_modifying_due_date = "Failed to modify the due date."
 issues.error_removing_due_date = "Failed to remove the due date."
 issues.due_date_form = "yyyy-mm-dd"
 issues.due_date_form_add = "Add due date"
-issues.due_date_form_update = "Update due date"
-issues.due_date_form_remove = "Remove due date"
+issues.due_date_form_edit = "Edit"
+issues.due_date_form_remove = "Remove"
 issues.due_date_not_writer = "You need repository write access to update an issue's due date."
 issues.due_date_not_set = "No due date set."
 issues.due_date_added = "added the due date %s %s"

templates/repo/issue/view_content/sidebar.tmpl

@@ -225,8 +225,8 @@
 					{{end}}
 					{{if and .IsSigned .IsRepositoryWriter}}
 						<br/>
-						<a style="cursor:pointer;" onclick="toggleDeadlineForm();"><i class="edit icon"></i>Edit</a> -
-						<a style="cursor:pointer;" onclick="updateDeadline('');"><i class="remove icon"></i>Remove</a>
+						<a style="cursor:pointer;" onclick="toggleDeadlineForm();"><i class="edit icon"></i>{{$.i18n.Tr "repo.issues.due_date_form_edit"}}</a> -
+						<a style="cursor:pointer;" onclick="updateDeadline('');"><i class="remove icon"></i>{{$.i18n.Tr "repo.issues.due_date_form_remove"}}</a>
 					{{end}}
 				</p>
 			{{else}}