add one dropdown button for notFound and Trash pages

src/client/js/components/Admin/Customize/CustomizeFunctionSetting.jsx

@@ -91,7 +91,6 @@ class CustomizeFunctionSetting extends React.Component {
                 </CustomizeFunctionOption>
               </div>
             </div>
-
             <div className="form-group row">
               <div className="offset-md-3 col-md-6 text-left">
                 <CustomizeFunctionOption
@@ -107,6 +106,7 @@ class CustomizeFunctionSetting extends React.Component {
               </div>
             </div>
 
+            {/* ユーザーページ */}
             <div className="form-group row">
               <div className="offset-md-3 col-md-6 text-left">
                 <div className="my-0 w-100">
@@ -135,6 +135,33 @@ class CustomizeFunctionSetting extends React.Component {
             </div>
 
             {/* TODO Implemetn dropdown toggle for pageListLimitForModal (pageList pageTimelin pageHistory, pageAttachment, shareLink) */}
+            {/* NotFound / Trash ページ */}
+            <div className="form-group row">
+              <div className="offset-md-3 col-md-6 text-left">
+                <div className="my-0 w-100">
+                  <label>{t('admin:customize_setting.function_options.list_num_desc_in_notfound_and_trash_pages')}</label>
+                </div>
+                <Dropdown isOpen={this.state.isDropdownOpen} toggle={this.onToggleDropdown}>
+                  <DropdownToggle className="text-right col-6" caret>
+                    <span className="float-left">{adminCustomizeContainer.state.pageListLimitForUserPage}</span>
+                  </DropdownToggle>
+                  <DropdownMenu className="dropdown-menu" role="menu">
+                    <DropdownItem key={10} role="presentation" onClick={() => { adminCustomizeContainer.switchPageListLimitForUserPage(10) }}>
+                      <a role="menuitem">10</a>
+                    </DropdownItem>
+                    <DropdownItem key={30} role="presentation" onClick={() => { adminCustomizeContainer.switchPageListLimitForUserPage(30) }}>
+                      <a role="menuitem">30</a>
+                    </DropdownItem>
+                    <DropdownItem key={50} role="presentation" onClick={() => { adminCustomizeContainer.switchPageListLimitForUserPage(50) }}>
+                      <a role="menuitem">50</a>
+                    </DropdownItem>
+                  </DropdownMenu>
+                </Dropdown>
+                <p className="form-text text-muted">
+                  {t('admin:customize_setting.function_options.all_list_num_desc_in_notfound_and_trash_pages')}
+                </p>
+              </div>
+            </div>
 
             <div className="form-group row">
               <div className="offset-md-3 col-md-6 text-left">