Fix misc minor issues.

Includes: type descriptions, whitespace,
semicolons, debris code.
Revert "Refine Swift usage..."

This reverts commit fd589482255592889e399376e351ba509c278020.

Conflicts:
	Eventual/Eventual/AppearanceManager.swift

It turns out the final keyword freaks out LLVM in various
cryptic ways and and generates build errors.