web- navigation bar: Open window button visibility. (#3246)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26702 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
SAVE gui: initialize the GUI with correct material selected

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26706 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
4.9.174.0

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26707 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e