Ticket #3485: introducing AppWsimple properly is harder, step 1

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27639 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Ticket #3485: one step before substituting EuclidianDockPanelW with EuclidianSimplePanelW

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27640 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e