chore(task aliases): add webserver alias

The webserver alias task will fire up a webserver (connect:docs) for
docs debugging.
docs(getting started): download, deps, package and template
fix(lists): don't overwrite margin-left when is a .row

When using a unstyled or inline list, the margin-left was enforced to 0,
what conflicts with a .row.
docs(menu): add JS highlight