[giac]: attempt to optimize sym_tab with char * insted of string, should not affect ggb bt who knows...

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34891 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
searchPanel: style & add default text ("search material")

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34892 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Ticket #4388: basic support for inserting one file into another. This was much easier than I first thought. However, it still has some limitations, which I suspect to be scripts and other advanced elements

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@34893 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e