use percli process to build admin components and make admin console editable about peregrine-cms

[reusr1]

The admin components currently don't follow the same build process as regular sites component (fragments, etc). We should follow the same process to build admin components as we follow to build websites.

Changing this process should also allow us to make the admin console authorable ( see for example http://localhost:8080/content/admin/pages/edit.html/path:/content/admin to author the main screen of the admin console).

Taking this approach should allow us to

• better velocity in building out the administration console
• better admin components (reuse instead of rebuild)
• better adhoc testing (peregrine developers work the same way as site developers do)
• position peregrine to build arbitrary web applications, not just sites

[reusr1]

putting this on hold for now