DOMNodeList goodness that all nodelists should have. Change some JS to not
break, and some other JS to be a little more efficient with the new world of
lazy listness. Bug 240186, r=neil on the JS changes, r=jst on the content
changes, sr=jst
Removing support for <outliner> tags
Removing <tree> layout code and moving <tree> tags to outliner layout
Convert all usage of <outliner> to tree tags
Convert all usage of <tree> tags to new <tree> syntax or <listbox>
r=cmanske,varga sr=hyatt,sspitzer a=asa
Also includes fixes by Jan Varga (varga@utcruk.sk) for bugs 132020, 133451, 131393, 115894, and 129327