Remove commented styles

Since we're committing on moving the title bar below the workflow
step bar, remove the old styles that had been temporarily commented
out.

Addresses #579
Adjust title styles

Now that the title and byline are in it's own bar, adjust the styles:

* Make the title and byline 100% of the container width
* Make the inputs slightly wider
* Make the fancy tooltip show at the top-left of the title element
  instead of in the center.

Addresses #579
Refine tool menu behavior

Since the tools menu has been turned into a dropdown:

* Open the menu before showing the preview and exit tour guiders.
* Use the slideToggle() jQuery effect instead of toggle() to show
  and hide the menu.
* Show the tooltips to the left of the menu items.
* Close the menu when the "Preview" item is clicked.

Addresses #579