In every sheet.xml there is information about dimensions, like:
<dimension ref="A1:AMJ177"/>. During export by LibreOffice to .xlsx,
when row or column has maximum value, the dimension was
truncated. For example given "A1:AMJ177" it's saves <dimension ref="1:177"/>.
It was caused problems with Office 2007 import.
This patch is fixing that by always using full address notation
for dimension range,  and allow open documents exported by LO
properly by MS Office.

Change-Id: Idda1455d1f9db08ade0871110fe40be2667c176c
Reviewed-on: https://gerrit.libreoffice.org/30960Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Markus Mohrhard <markus.mohrhard@googlemail.com>