chore(bower): move bower_components under the app folder

[petebacondarwin]

This will help web servers who are not happy to serve up files outside
the "root" folder of the application.

[eddiemonge]

Funny, we did the opposite: yeoman/generator-webapp@cdc519d

[petebacondarwin]

I appreciate that it is nice to have the app folder as a safe place where the developer can do their stuff. But then you do need a build process and a dist folder.

The build would move (and possibly concatenate and minify) the "needed" bower component files (many are not) and the application files in order to be served.

This is a valid process but since angular-seed is minimal and has no build process it makes more sense to keep things that are to be served in a single folder. In the case of angular-seed, the app folder itself only contains the index files and then a bunch of folders where you do actually do your stuff, such as js, css, img, partials.

The only real concern I have is that we are modifying the "default" bower installation location, which is always going to add confusion.

Despite all this, I think it is reasonable to move the bower_components into app for the purposes of angular-seed. But it should be well documented in the README.