Move the real bootstrapping to com:application.bootstrapper.

com:koowa.bootstrapper now becomes the default class that all Koowa components for Wordpress should extend. A component will not be bootstrapped if it doesn't have a bootstrapper file.

Also: Register namespace of components in the WP_PLUGIN_DIR that has the prefix "koowa-".
Don't rely on the koowa- prefix to load the component. If it's activated and it has bootstrapper, then bootstrap it.
Added the html tag filter abstract. Also added adminmenu and submenu filters.

This html tag filter will look for tags and its attributes so they can be manipulated on render.
Don't route the application dispatcher when it is run. Still thinking of what to do here...
Don't prevent recursive bootstrapping for ComKoowaBootstrapper.