TWE-63: Switch PromoBlock.description to RichTextBlock

This will enable editors to use paragraphs (and other
formatting options).

Author: bmispelon

tbx/core/blocks.py

@@ -841,7 +841,7 @@ class Meta:
 
 class PromoBlock(blocks.StructBlock):
     title = blocks.TextBlock()
-    description = blocks.TextBlock()
+    description = blocks.RichTextBlock(features=settings.NO_HEADING_RICH_TEXT_FEATURES)
     image = CustomImageChooserBlock()
     button_text = blocks.CharBlock(max_length=55)
     button_link = blocks.StreamBlock(

tbx/project_styleguide/templates/patterns/molecules/streamfield/blocks/promo_block.html

@@ -1,9 +1,9 @@
-{% load wagtailimages_tags %}
+{% load wagtailcore_tags wagtailimages_tags %}
 
 <div class="grid__promo promo-block">
     <div class="promo-block__content">
         {% include "patterns/atoms/section-title/section-title.html" with title=value.title classes="promo-block__title" %}
-        <p class="promo-block__description">{{ value.description }}</p>
+        <div class="rich-text promo-block__description">{{ value.description|richtext }}</div>
         {% if value.button_text %}
             <a href="{{ value.get_button_link }}" class="button promo-block__button">{{ value.button_text }}</a>
         {% endif %}

tbx/project_styleguide/templates/patterns/molecules/streamfield/blocks/promo_block.yaml

@@ -1,7 +1,11 @@
 context:
   value:
     title: This is the title of this generic promo teaser
-    description: Donec tortor mi, pulvinar non enim et, hendrerit efficitur nisi. Etiam egestas imperdiet purus, faucibus convallis leo pharetra sit amet.
+    description: |
+      Donec tortor mi, pulvinar non enim et, hendrerit efficitur nisi. Etiam egestas imperdiet purus, faucibus convallis leo pharetra sit amet.
+      Sapiente eos et repudiandae amet consequatur.
+
+      Fugiat quia eaque enim itaque cupiditate animi blanditiis. Quas at et id magnam impedit.
     button_text: Call to action
     get_button_link: '/#'
     secondary_link: