Format people#show and company#show

Show contact information as two columns. Left column for Company/Person
name, contact data, bio, and link to edit. Larger right column for Note
form field and notes listed in reverse order.
Add switch link to person#new and company#new.

The default top bar action is to add a new person. This link on
person#new allows the user to switch to company#new. A reverse link
exists on company#new to switch back to person#new.
Memos/Notes no longer shallow.

To properly show, edit, and route notes and memos on a person or
company's record, we need memos and routes to always be children.
Memorable routes are now all sub resources of parent routes. Showing
notes in person/company will call edit and delete as sub-routes to the
person or company.