Pages and Posts support

Mostly changes supporting pages & posts.

More general plugin clean up.
Starting to include the web component + WP css with an action.
breadcrumb action
page and post templates (standard page, single column page, post (announcement, event and press release)
support excerpts in post-list
use one web-component (post-list) three ways (for homepage, as wrapped by announcement-list) - on category-template.php, and as a GB to add a custom list to any content page. (Still needs paginator.)
Stubs for event-detail
Build mode support & rendering compiled components to the front end.
Merged prior releases
Styles for homepage (desktop)
Styles for a single-column page (mobile/desktop)