Create filter gameCurrencyHtml

Converts an integer into HTML markup containing gold/silver/copper
format and icons
Add Angular ngCloak styles
Add string.js lib
Create humanize filter
Add itemSubtype filter

Does a bit of processing of subtype; if it’s an infusion with a subtype
of `Default`, we’ll sub it with `Infusion`, and if it’s indefined,
we’ll sub it with `type`.
Process item subtype values on fetch instead of in view
Add filtering
Templatize index and item pages