Remove current from NavItem, not being used
Remove searching of all tags in SectionLink currentFor
Add method for seaching through all tags against SectionLink with
currentForIncludingAllTags
Add methods to NavItem for proxying searching through all tags via
SectionLink AND also searching through both currentFor and
currentForIncludingAllTags
Search without all tags first THEN search with all tags if that fails
Change Navigation localNav to return an Option NavItem
Use this to search using searchForCurrentSublink
Merge branch 'fix-navigation'