(In the OTS SVN tree, r21800 adjusts for this change.)

The original motivation for this change was to avoid confusion with
\otsparenref and some other related commands that I'm about to add.
But then when I looked more closely, I realized that the documentation
for \otsref (now \otsoref) was quite out-of-date too, so I updated it.

This is how our infrastructure improves, one yak-shave at a time.

Make "hour" and "hours" align on the right, which visually implies a
vertical line between the hours column and the charges column.  This
in turn makes right-aligning the charges column even more attractive
than it already was, so do that too (though it was probably a good
idea before and we just hadn't gotten around to doing it until now).

Persuading LaTeX (or rather, TeX) to vary its output based on singular
vs plural turned out to be a major research project.  But now we've
finally done it, so we can just sit back and let the profits roll in.

Adjust where the date sits under the signature, so that the date isn't
squashed down such that it touches the hrule line underneath it.

Context: I actually made this change on November 3rd, as part of
building a contract document that day.  However, I forgot to push the
change then, and later it was in the way when I needed to pull from
upstream.  Rather than create a merge commit, I just saved the patch
and re-applied it.  So if you're at OTS and you're wondering about the
motivation for this change, look for a contract build on 2020-11-03.

This follows up to r16468 in the corporate repository.

I actually wrote this up on May 7th, but forgot to commit it.

This fixes the problems described in issue #11, but is not a solution
that anyone should invite home to dinner.  See issue #15 for details.

Before this change, a section would have a small (5pt) title size, but
then subsections within it would have a larger title size -- I don't
know exactly what size, because it was some LaTeX default, but it was
clearly larger than 5pt in any case.

Probably the reason we never noticed this before is that our contracts
tended not to have subsections.  But then we wrote one that included
an SOW in the contract, and the SOW's subsections looked all wonky:
their title lines were larger than those of the containing sections.
This fixes the problem; I know not whether it introduces new problems.

This undoes one part of commit 22ff9b53963f, at least for now.  The
ultimate decision is still up for discussion.  Maybe little solid
OTS-green dots as bullet points instead?

I've never liked the old letterhead styling.  This improves things a
bit.  This commit includes cc-licensed noun project icons.  I'll buy a
license to them so we don't have to include attribution on every doc
we send out.  We should consider doing attribution anyway when we can.

Hmm, I'm a little leery of putting this here, given the advice in the
log message of commit 45c93c61.  But we already have two docs
depending on it, and I didn't want to leave it sitting as a local
change (I'd meant to commit it and just forgot, and probably that all
happened before commit 45c93c61 was even made).  So I'm committing
it now, on the theory that it's a found dependency, but if we want to
revise our philosophy to be closer to what commit 45c93c61 says, I'm
open to that discussion, and I realize it might result in the
reversion of this change too.

There are two issues here.  First, LaTeX wisdom (and docs) say to load
hyperref as close to last as possible, or you're going to break
things.

Second, loading it here precludes loading it later with different,
conflicting options.  Generally, ots.sty should load things that are
essential.  Put the optional things in subsidiary style files or
individual docs.

Both of these blocks were very common in LaTeX headers at OTS.

Among OTS's docs that used this unnumbered/numbered sectioning system,
there were two variants (well, really three, but one of the variations
was just the presence or absence of a comment about appdxsection being
"related to CAMH template stuff that is too boring to go into here";
that comment seems likely to be obsolete so I'm not porting it over).
The newer of the two variants was only used in one doc, but that doc
was the most recent one, so what it has is probably what we want:

* Add comment about using "\setcounter{section}{0}"

* Include a colon, so it's "Appendix <letter>:"

We had been repeating this command definition in the preamble of all
our LaTeX documents; now we don't have to do that anymore.

This is part of a general effort to shift usepackage statements out of
individual .ltx documents and into our common .sty infrastructure.
There are probably other packages that could be shifted too; rather
than do a sweep to find them, I'm just doing it opportunistically.

Move the LaTeX template files and the get_revision script from OTS's
private SVN tree to here.  Rewrite README.md.  Clean up the Makefile,
moving all documentation into README.md removing the "VIEW=true"
feature as discussed with James.