deleting method that does nothing
fixing mail snapshot body
adding fielset distinctions
Merge branch '2404_tv5_emails_onPar_with_tv3' of tuleap.net:tuleap/tuleap/dev into 2404_tv5_emails_onPar_with_tv3

* '2404_tv5_emails_onPar_with_tv3' of tuleap.net:tuleap/tuleap/dev:
  adding fielset distinctions
Add title to follow-up part in html email
Add changes in html emails
Remove diff in follow ups
Enhance fieldset display in email
refactoring follow-up comments for mail
Revert commit #3d0a0095d9c7241b7f9c9b0b594e6d48bceaa8d0
increasing singleton count
Merge branch '2404_tv5_emails_onPar_with_tv3' of tuleap.net:tuleap/tuleap/dev into 2404_tv5_emails_onPar_with_tv3

* '2404_tv5_emails_onPar_with_tv3' of tuleap.net:tuleap/tuleap/dev:
  increasing singleton count
  refactoring follow-up comments for mail
Replace empty value in html email by adash
putting cetntering back-in
ignoring empty body on follow-up comments
Merge branch '2404_tv5_emails_onPar_with_tv3' of tuleap.net:tuleap/tuleap/dev into 2404_tv5_emails_onPar_with_tv3

* '2404_tv5_emails_onPar_with_tv3' of tuleap.net:tuleap/tuleap/dev:
  putting cetntering back-in
adding graying to follow-up comments
Fix unit tests
Merge branch '2404_tv5_emails_onPar_with_tv3' of tuleap.net:tuleap/tuleap/dev into 2404_tv5_emails_onPar_with_tv3

* '2404_tv5_emails_onPar_with_tv3' of tuleap.net:tuleap/tuleap/dev:
  adding graying to follow-up comments
  ignoring empty body on follow-up comments
changing follow-up display
Merge branch '2404_tv5_emails_onPar_with_tv3' of tuleap.net:tuleap/tuleap/dev into 2404_tv5_emails_onPar_with_tv3