add fastClickHandler

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27782 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Allow scrolling in Worksheet GUI if description too long

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27783 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
StyleBar, InputDialog (fixes)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27784 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e