commandref_frame.html: Dashboard added as Helper


git-svn-id: svn://svn.code.sf.net/p/fhem/code@4425 2b470e98-0d58-463d-a4d8-8e2adae1ed80
suppress warnings on uninitialized values if device returns nothing
upgraded log function to log3

git-svn-id: svn://svn.code.sf.net/p/fhem/code@4426 2b470e98-0d58-463d-a4d8-8e2adae1ed80