Remove filtering individual settings by device.

Bonus: simplify the section reloading code.
Formatting and #import/@import goofiness.

Xcode 6b7 seems to be having some indexing issues with modules.
Bind switches and steppers in Settings view.
Formatting and lazy-loading sections.
Reload table on rotation, iOS 8-style.
Don't hardcode which section has the Awful version number.
Let UITableView figure out header/footer display on settings screen.
Move username/avatar atop Settings screen, heading the "log out" section.

The "Awful" section is now split off.