Fixes and tidying in Buttons, Filling, Asymptote export (Giuliano Bellucci)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24125 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
implemented dock panel layout for web

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24126 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e