[FIX] web_editor: send an image thumbnail for attachment link in mail

Before this fix attachmentThumbnailToLinkImg is not called for
style-inline options. The mail received does not have thumbnail and the
user can't click on the invisible link.

opw-1863659

addons/web_editor/static/src/js/backend/fields.js

@@ -172,9 +172,9 @@ var FieldTextHtmlSimple = basic_fields.DebouncedField.extend(TranslatableFieldMi
      */
     _getValue: function () {
         if (this.nodeOptions['style-inline']) {
-            transcoder.linkImgToAttachmentThumbnail(this.$content);
-            transcoder.classToStyle(this.$content);
+            transcoder.attachmentThumbnailToLinkImg(this.$content);
             transcoder.fontToImg(this.$content);
+            transcoder.classToStyle(this.$content);
         }
         return this.$content.html();
     },
@@ -220,6 +220,8 @@ var FieldTextHtmlSimple = basic_fields.DebouncedField.extend(TranslatableFieldMi
         this.$content.trigger('mouseup');
         if (this.nodeOptions['style-inline']) {
             transcoder.styleToClass(this.$content);
+            transcoder.imgToFont(this.$content);
+            transcoder.linkImgToAttachmentThumbnail(this.$content);
         }
         // reset the history (otherwise clicking on undo before editing the
         // value will empty the editor)

addons/web_editor/static/src/js/inline.js

@@ -41,6 +41,7 @@ snippet_editor.Class.include({
     start: function () {
         _.defer(function () {
             var $editable = $('#editable_area');
+            transcoder.linkImgToAttachmentThumbnail($editable);
             transcoder.imgToFont($editable);
             transcoder.styleToClass($editable);
 
@@ -53,7 +54,7 @@ snippet_editor.Class.include({
         this._super.apply(this, arguments);
 
         var $editable = $('#editable_area');
-        transcoder.linkImgToAttachmentThumbnail($editable);
+        transcoder.attachmentThumbnailToLinkImg($editable);
         transcoder.fontToImg($editable);
         transcoder.classToStyle($editable);