Added HTML tags escape to description on minicard.

client/components/cards/minicard.jade

@@ -148,7 +148,8 @@ template(name="minicard")
     if currentBoard.allowsDescriptionTextOnMinicard
       if getDescription
         .minicard-description
-          | {{ getDescription }}
+          +viewer
+            | {{ getDescription }}
 
 template(name="editCardSortOrderPopup")
   input.js-edit-card-sort-popup(type='text' autofocus value=sort dir="auto")