Icons for perspectives

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36589 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Refactor AlgoCellRange and CmdCellRange to avoid ? creation, and to add geo at the end of the list faster

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36590 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e