Navigation bug fixes

Resolved bug - Navigating to a category 3 levels deep, then navigation
to a different 2nd-level category, would close the full navigation.

Resolved bug - Navigating to a third level category, then accessing a
top level category, would close the entire navigation.
Merge branch 'master' of https://github.com/kentcc/kelsi

Conflicts:
	templates/homepage.html
Merge fixup