move menu partials around. don't use 'inline' namespace for partials when they're not, in fact, inline :/

now that the menu... y'know... works... (admittedly only for some value of works) lets move the pieces grace.html rocky.html and walk.html to more apropos homes. ie partials/header/rocky.html -> partials/menu/rocky.html partials/inline/menu/walk.html -> partials/menu/walk.html and update as needed.

also, lets steal^H^H^H^H^HBorrow the context/scope setting logic jp has setup and implement it in the menu for consistency.