request #7570 Reply by email: outlook quote not properly stripped

This is a first version of the patch.

It's highly brittle and should be tested with real data before making default

Change-Id: I81bf42698410c6e9eb110909437d7dc66383f1ea
Merge commit 'refs/changes/58/3158/1' of ssh://gerrit.tuleap.net:29418/tuleap into HEAD

* ssh://gerrit.tuleap.net:29418/tuleap:
  request #7570 Reply by email: outlook quote not properly stripped
This is Tuleap 7.6.99.22

Change-Id: I97e5e222a43df7c5379a742823941ec9df5dcfb8