Rewrite the end section; clarify enforcement

Incorporate suggestions from dove and others to clarify how
enforcement will work.

Hopefully this section now communicates that this will be largely
community enforced, but will not preclude anyone who has been hurt by
a "violation" of these rules from coming to the EC for assistance.
The goal is to make it clear that there are not specific punishments
for each instance of "well-actually" or "Sorry but not sorry", but
simultaneously not in any way deny the EC the power to take action
against any SIPB member or propsective who is making the office an
unwelcoming (or even hostile) environment.

Third parties are encouraged to talk to the recipient first, but
should still feel empowered to speak up if necessary.  (e.g. If $X
says something sexist to $Y, and $Y doesn't react, but $Z also was
upset by the sexist comment, $Z should feel free to speak out.)  The
last sentence in the penultimate paragraph is deliberately the same as
in the paragraph above it.
Clarify part on -isms

Note that issues of sexism may not be directed at specific individuals
(e.g. a group of people in the office rating women on okcupid), and
that in these situations, it's important for anyone to speak up
Move "perfection not required" paragraph to the beginning

I feel this sets a good tone for the document, which is that we're all imperfect.
It also no longer begins the document with a "No...." principle
Wordsmith "feigning surprise" section

Incorporate suggestions from jhawk to clarify that we're talking
about deliberate overreactions, and not genuine surprise, but the latter
can still make people feel bad
Clean up "well-actually" section.

Move footnote about the origins of the term to be a footnote.
(inline note breaks up the flow).

Incorporate suggestions from jhawk and zhangc to clarify this point.
Re-phrase rule in a more positive manner
Clean up apologies section

Rephrase in more positive manner.

Incorporate suggestions from jhawk so as to clarify exactly what
type of apologies we're talking about and why.