by editeng support of large superscript raising.

Maximal raising of superscript text is 1584 pt in MSO,
while LibreOffice didn't import the values greater
than 100% of the current font height. Using the maximal
percent value of the default 11 pt font, the limit
is 14400% now, fixing most of the import problems.
Greater raisings will be limited to 14400% during the
DOCX import.

Note: the standard doesn't limit the bigger percent
values, see "20.374 style:text-position" and
"18.3.23 percent" in OpenDocument 1.2.

Change-Id: I3d0d08f273f2067180f74fba40c47d62364fcc59
Reviewed-on: https://gerrit.libreoffice.org/69164
Tested-by: Jenkins
Reviewed-by: László Németh <nemeth@numbertext.org>