Fixed bug tha occured when no search query was entered.
Removed getSiteTree() function and used pluckMenus instead since now we have a site tree mennu.
Fixed bug that caused orphaned menus to show up in the menuLocations array.
Removed section menu locations.
Changed getSectioNav() to bring baack site tree.
Updated twig templates to pull sel section nav from site tree. Removed menu-specific macros in favor of more generaized ones.