Rich text tiles with templates in Plone Mosaic

registry.xml

<?xml version="1.0"?>
<registry xmlns:i18n="http://xml.zope.org/namespaces/i18n"
          i18n:domain="plone">

    <records prefix="plone.app.mosaic.structure_tiles.card"
           interface="plone.app.mosaic.interfaces.ITile">
    <value key="default_value">&lt;div class="card-header"&gt;Header&lt;/div&gt;&lt;div class="card card-block"&gt;&lt;h3 class="card-title"&gt;TItle 1&lt;/h3&gt;&lt;p class="card-text"&gt;Content&lt;/p&gt;&lt;/div&gt;</value>
    <value key="category">structure</value>
    <value key="read_only">False</value>
    <value key="name">card</value>
    <value key="settings">False</value>
    <value key="favorite">False</value>
    <value key="label">Card</value>
    <value key="tile_type">text</value>
    <value key="rich_text">True</value>
    <value key="weight">80</value>
  </records>

  <record name="plone.app.mosaic.structure_tiles.card.available_actions">
    <field type="plone.registry.field.List">
      <value_type type="plone.registry.field.TextLine" />
    </field>
    <value>
      <element>toolbar-bold</element>
      <element>toolbar-italic</element>
      <element>toolbar-bullist</element>
      <element>toolbar-numlist</element>
      <element>toolbar-table</element>
      <element>toolbar-ploneimage</element>
      <element>toolbar-unlink</element>
      <element>toolbar-plonelink</element>
      <element>toolbar-code</element>
      <element>toolbar-template</element>
      <element>contextmenu-tableprops</element>
      <element>contextmenu-cell</element>
      <element>contextmenu-row</element>
      <element>contextmenu-column</element>
    </value>
  </record>

</registry>