Adding option to scrollToControl()

If setLastFocusedChild is true, scroller will set up inControl to be the spotted child when scorller is spotted.
Setting 4th parameter to true

When scrolling to index
Adding 'setLastFocusedChild()' method to MoonScrollStrategy
BHV-3479: Fixed typo

Enyo-DCO-1.1-Signed-off-by: Aaron Tam <aaron.tam@lge.com>
Merge pull request #1266 from enyojs/LEX-BHV-3479

Fixing http://jira2.lgsvl.com/browse/BHV-3479

Looks good!

Reviewed-by: Aaron Tam (aaron.tam@lge.com)