add trailing slash to nav and pagination links
Whitespace.
Merge pull request #61 from johnotander/grab-trailing-slash-from-aminb

Cherry pick aminb trailing slash commit. Closes #60.
Attempt to fix site nav positioning.
Fix weird nav alignment issue. Closes #62.
Merge branch 'master' into aminb

Conflicts:
	_includes/navigation.html
	_includes/pagination.html