Still work in progress. The new UNO command is "MoveTabstop" with two
arguments: Tabstop (the index of the tabsetop) and Amount (in twips,
left (negative) or right).
The intent is that moving a tabstop in core will cause a callback that
will redraw the ruler, like moving a paragraph margin does.
Change-Id: Ic6b8b11811d2a7f6510c505fff421e1796300c70
Reviewed-on: https://gerrit.libreoffice.org/c/online/+/87868
Tested-by: Jenkins CollaboraOffice <jenkinscollaboraoffice@gmail.com>
Reviewed-by: Tor Lillqvist <tml@collabora.com>
d532705a85