Re-work to be component/feature organized

[aubreypwd]

This was an idea given to me by a coworker, e.g.:

• feature-name/
  • assets/
    • js/
    • css/
  • class-feature-name.php
  • vendor/

The idea is that the folder feature-name could be moved around to other plugins using this same platform. E.g. bug-spray could be easily added to another project just by copying the folder (which has all it's things) to the plugin on another projects and loaded into the class-app.php and run it's hooks/etc.

Maybe hooks could be auto loaded now which would do all the things.

[aubreypwd]

Let's also name the folder components/ instead of features/ (but also allow features/ for backwards compatibility).

[aubreypwd]

See #13

[aubreypwd]

Marking as dup of better #13