Fix smart selects w/ search bars & fixed navbars

When an app is using fixed navbars, smart-select pages with search-bars lack the proper nabber classification, which causes search-bar styling to be positioned incorrectly. This change passes a nabber class no matter what, ensuring the smart-select page has the proper class.
Merge pull request #142 from johnjamesjacoby/master

Fix smart selects w/ search bars & fixed navbars