[SVN] r7691 (TODO)

[Stanley Rost]

• Moved require of `webpreview.rb` back up before the first use
• Updated Help to tell about Preferences command and not shell variables

Changed:
U   branches/WIP/Bundles/TODO.tmbundle/Commands/Help.tmCommand
U   branches/WIP/Bundles/TODO.tmbundle/Support/todo.rb