Removed javax.swing.SwingConstants from common

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@38074 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Deleting webworker package

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@38075 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Deleted empty package

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@38076 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e