Install Bower at top level

[i-like-robots]

Bower may only need to be installed once at the top-level because it supports a cwd config option, e.g.:

bower i sass-mq --config.cwd=components/x-teaser

We could therefore refactor to run bower install using athloi in future.

[apaleslimghost]

previously we've avoided doing this because it makes it look like a first-class officially-sanctioned thing but we'd rather people not be using bower, and once origami isn't using it any more we should kill it, wdyt

[i-like-robots]

Oh yeah, I should have signed off the issue "Not that we want to encourage this sort of thing"

[i-like-robots]

We have done this as a part of Anvil https://github.com/Financial-Times/anvil/pull/113