Add tag clouds and post counts using .badge class

[salcode]

@atcraigwatson is adding styles for tag clouds and post counts using the .badge class in his fork

These are being added with str_replace(). Using str_replace() always seems a little brittle to me so I am hesitant about adding this, though it does look sharp (and str_replace() may be the only way or at least the cleanest way to get this styling in place).

This is definitely worth more investigation.