CloudCannon: Add editable area attributes

Author: nginx-jack

layouts/_default/docs.html

@@ -22,7 +22,7 @@
     </div>
 
     <section class="content-layout">
-      <div class="text-content">
+      <div data-cms-edit="content" class="text-content">
         <section class="breadcrumb-layout" data-mf="true" style="display: none;">
           {{ if not .IsHome }}
             {{ if not (in .Params.display_breadcrumb "false" ) }}

layouts/_default/list.html

@@ -19,7 +19,7 @@
   </div>
 
   <section class="content-layout" data-mf="true" style="display: none">
-    <div class="text-content list-page">
+    <div data-cms-edit="content" class="text-content list-page">
       <section class="breadcrumb-layout">
         {{ if not .IsHome }}
           {{ if not (in .Params.display_breadcrumb "false" ) }}