Serialize HTML when attachments preload. Fixes #347
Serialize HTML when attachments preload. Fixes #347

GabiGrin/trix,basecamp/trix,urossmolnik/trix,ChenMichael/trix,basecamp/trix,urossmolnik/trix,GabiGrin/trix,ChenMichael/trix,basecamp/trix,urossmolnik/trix,basecamp/trix,GabiGrin/trix,ChenMichael/trix