make more components uneditable from GUI

src/components/attachment/attachment.style.js

@@ -1,6 +1,7 @@
 export default {
   name: 'Attachment',
   selector: '.Attachment',
+  notEditable: true,
   validInnerComponents: [
     'Border',
     'ButtonUnstyled',

src/components/rich_content/rich_content.style.js

@@ -1,6 +1,7 @@
 export default {
   name: 'RichContent',
   selector: '.RichContent',
+  notEditable: true,
   validInnerComponents: [
     'Text',
     'FunText',

src/components/user_card/user_card.style.js

@@ -1,6 +1,7 @@
 export default {
   name: 'UserCard',
   selector: '.user-card',
+  notEditable: true,
   validInnerComponents: [
     'Text',
     'Link',