The Stacks project

LaTeX: \Sch

	Introduced a new macro

	\def\Sch{\textit{Sch}}

	and replaced all the occurences of \textit{Sch} with \Sch.

Clarification on stacks associated to presheaves

	Added a separate example for the case where you start with a
	presheaf of sets and take the associated category fibred in
	sets. Also some small snafu's corrected.

More Groupoids: small changes

	Also divided up the material on quotient stacks to get better
	readability.

Terminology:
	"group space" ---> "group algebraic space"
	"groupoid space" ---> "groupoid in algebraic spaces"

	It seems more natural this way to at least three people, and in
	any case it prevents the possible confusion that may arise from
	the fact that in some places in the literature the word "space"
	sometimes refers to any sheaf on schemes in the fppf topology.

Tags: added new tags

Groupoid spaces: abstract quotient stacks

	Some formal lemmas on properties of a quotient stack of a
	groupoid space. Coming up: a description of its morphisms,
	objects, etc.