docs(tutorial/step_4: update test to match new $bindings behaviour

var phoneNameColumn = element.all(by.repeater('phone in phones').column('{{phone.name}}'));
should be
var phoneNameColumn = element.all(by.repeater('phone in phones').column('phone.name'));

Closes #9823
feat($anchorScroll): add support for scrolling independently of `$location.hash()`

Add an optional argument to `$anchorScroll()` to enable scrolling to an
anchor element different than that related to the current value of
`$location.hash()`. If the argument is omitted, the value of
`$location.hash()` will be used instead.

Closes #4568