fdo#87044: reportbuilder: Revert "fdo#67930 don't use variables ...

... for formattedtext in header/footer"

This reverts commit b0e3c6b8fa548defd5a3af2b8bf88b0b49589753.
This reverts commit fc92c1abebcfe9b18649d35b76bf22e001e332da.

The other fix from the libreoffice-4-1 branch seems to work better.

Change-Id: Idc5d7543c11dff74977729dab5afd978197dab6a
(cherry picked from commit d6ce95ae2288859fe74d601f1bdaf616ab1ee7f0)

fdo#67930 work around fdo#68024

don't emit string-value attribute

Change-Id: I3668b88437451523f2b6bb3c2c82e1929f7ba3d8
Reviewed-on: https://gerrit.libreoffice.org/5371
Tested-by: Miklos Vajna <vmiklos@suse.cz>
Reviewed-by: Miklos Vajna <vmiklos@suse.cz>
(cherry picked from commit 76408b0f0d7e91cddb8b056069a2ee547109b156)
(cherry picked from commit 1e10f6d229587ffc2a955c225b489645f8016e23)
Reviewed-on: https://gerrit.libreoffice.org/13458
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>