Use Bootstrap breadcrumb style
Add breadcrumb to root page
Cleanup breadcrumb generation

We now put all links into a single array and simply iterate over that.
Correct spacing between breadcrumbs

The slash between the crumbs was not symmetric: it was shifted to the
left. This is now fixed by adding whitespace on the left instead of
the right side of the slash.

Please see the comment in the CSS file for the full details.
Merge pull request #9 from mgeisler/breadcrumbs

Better breadcrumbs