[web] disable session storage (undo/redo) in IE9

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24204 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[web] don't compile for Opera

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24205 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[web] disable session storage (undo/redo) in IE9 (part 2)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24208 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Intersect plane/limited quadric (part 1) : outline and surface (intersecting lines)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24209 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[web] don't compile for Opera

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@24210 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e