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
[BUGFIX] `ember init` fails on `NULL_PROJECT`

Previously, if you try to run `ember init` inside an empty directory, it
will fail because `environment.project` was not set to `NULL_PROJECT`.

thanks to @abuiles for initial spike, [#529](https://github.com/stefanpenner/ember-cli/pull/529)

Steps:

```bash
mkdir foo && cd foo && ember init
```

Closes #540
Libraries included by default should not be in Brocfile.
removes console.log
Compress + Mangle minified output.