After a careful review of https://google-styleguide.googlecode.com/svn/trunk/angularjs-google-style.html and https://docs.google.com/document/d/1XXMvReO8-Awi1EZXAXS4PzDzdNvV6pGcuaF4Q9821Es/pub I move the components folder in app.

As mentioned in these docs:

Components

• A components directory contains directives, services, filters, and related files.
• Common data (images, models, utility files, etc.) might also live under components (e.g. components/lib/), OR it can be stored externally.
• Components can have subcomponent directories, including appended naming where possible.
• Components may contain module definitions, if appropriate.

Sub-sections (like our main folder)

• These top-level (or nested) directories contains only templates (.html, .css), controllers, and module definitions.
• We stamp out sub-level child sub-sections using the same unit template (i.e., a section is made up of templates, controllers, and module definitions), going deeper and deeper as needed to reflect the inheritance of elements in the UI.
• For a very simple app, with just one controller, sub-section directories might not be needed, since everything is defined in the top-level files.
• Sub-sections may or may not have their own modules, depending on how complex the code is.

This PR should fix #272