The following fixes are not made as patches 
1) dijit._editor.RichText -- changeset #13135 
6947942  FF only: Can not edit text in editor without typing first 
2) dijit._editor.plugins.EnterKeyHandling -- changeset #13168
6948332  RTF editor: line break does not work inside quoted message 
3) djitt._editor.RichText -- changeset #13192
6963386  Default font size for editor should be second smallest one