#4213 spreadsheet row/column sizes not always saved to xml; 
restore default spreadsheet settings on file open

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35419 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
improvements for web spreadsheet settings changes 

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35420 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
tidying

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35421 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
tidying

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35422 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
4.9.302.0

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35423 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e