desktop: perspective parameter for applets

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34523 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
If no file is opened and perspective param is given, make sure the perspective looks OK

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34524 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e