padding for text preview panel

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32258 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
update fonts on startup to get consistent fonts across web GUI (#3193)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32259 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e