Revert "polish the cover and title page"

This reverts commit e69e2f4721d5bfa8b928923e630b005997d36001.

Could you please not mess with the cover page, because it takes me 30 minutes to
get the fonts and the size and the spacing done every time. There is a miniscule
advantage in using the \outtitle macros. I am MUCH happier to have the text hard-coded
because every space counts, and with the macros I lose control over what the cover
looks like. Thanks.

Conflicts:
	front.tex
	main.tex
Put IAS in the signature in preface, removed 'however'
Removed the \ourtitle macros, again.

These macros have a miniscule advantage, if any. It is not clear from
their names where they appear, so we have to search anyway. They are not
useful for the title page, and \title and \author do not not appear visible
anyhow. So please stop putting them in because I will not use them on the
title page. And it's not like we are going to change the title a dozen
times.