#3882 GUI elements creation in Web part 1.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30824 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Code cleanup for #3938

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30825 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Better fix for #3937

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30826 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#3917 ImageCorners for web, icon fix

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@30827 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e