Fix adding tags to fetched emails in an Email Folder

When you add a Tag, if you refresh or open the same email summary with other user with all permissions the tag is not saved.

Steps to reproduce:

• Install JSF and IMAP-Connector add-ons
• login with Administrator account
• In a Workspace click in the New button and create an Email Folder
• Insert the parameters as seen on the attach "image1.png" (with a real gmail account)
• Click in the Check Email button (the unmarked emails of the gmail account that you inserted should appear)
• Open one of the emails and add one or more tags
• Refresh the page or navigate and go back to the document Summary
• error(the tags disappear)

see attachements: