Resolves fdo#84283: Export to PDF with footnotes in tables crash

Don't crash when there's no rectangles

Change-Id: I7e713025cacd449f708176254e05d40c0929577f
Reviewed-on: https://gerrit.libreoffice.org/11634
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
Reviewed-on: https://gerrit.libreoffice.org/11645
fdo#82043: Instead of the bold font, use a higher multiplifier (4.3 backport)

Change-Id: I835e5c645ef52f23254178c782f2d484c5c0d20f
Reviewed-on: https://gerrit.libreoffice.org/11651
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
bnc#897769: OOXML import: Import border lines using reference too.

Do not ignore 'lnRef' element.

Also fix typo to apply 'seCell' properties to the right cell (southeast).

Change-Id: Ia45f7016f358b70e6db06a232c569335ce9d7051
(cherry picked from commit 18898e13fda25fe6dc85318dd0711355c7b2cc26)
Reviewed-on: https://gerrit.libreoffice.org/11652
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
Resolves: fdo#84261 unexpected exception -> clang builds terminate

Change-Id: I545ed112b54fb3d81e67b0f42230811cd48de626
(cherry picked from commit 4652700776666e385946c47235363c1120846d5d)
Reviewed-on: https://gerrit.libreoffice.org/11653
Reviewed-by: Michael Stahl <mstahl@redhat.com>
Tested-by: Michael Stahl <mstahl@redhat.com>