This also changes the `buildpack-deps` detection so that it only triggers the "this image is large with lots of packages" description if some tag of the image being described is `FROM buildpack-deps` (and _not_ simply `-curl` or `-scm` variants), which adjusts `golang`, `haxe`, `influxdb`, `kapacitor`, `openjdk`, and `telegraf` to correctly have the shorter non-`buildpack-deps`-referencing description.
This uses the combination of us pushing to a namespace + `BASHBREW_ARCH` being set to determine whether we're pushing to an arch-specific page and should thus appropriately filter all content to the current architecture.