File opening for SMART, nicer dialogs

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32844 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#4207 Adding option icons

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32845 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Fixed zoom for Smart

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32846 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e