Fix for #3949

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30845 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Ticket #3485: sparing one setPerspectives call if app.html loads with a base64 ggb file (more testing needed)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30846 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#3882 GUI PlotPanel creation

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30847 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e