Revert "Ensure that Bower packages are installed after `npm install`."

This reverts commit 7a6fad3ffcfaf3465a103127f7ae91bec9420703.

this screws up ember new, which purposely runs npm install indepdently
of bower install
Merge branch 'master' into command-refactor
Fixed some acceptance, broke some units. Moving in the right direction.