#2869 fix

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27229 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
outputVE needs to be wrapped

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27230 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Speedup file loading when no spreadsheet traces present

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27231 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e