Centering for input dialog

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29565 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
FastClickHandlers in BrowseGUI

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29566 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e