Attempted varnish utf-8 fix
No URL quote for varnish
Varnish URL quoting behavior.

I've analyzed what varnish is doing here, and it looks like it's
somewhat different from what python's urllib.quote() does.  So we
instead use some custom safe characters here, taken from
https://en.wikipedia.org/wiki/Percent-encoding#Types_of_URI_characters
Trying out varnish w/ 712MB malloc
-custom4 xsession

Conflicts:
	localwiki/themes/sapling/templates/site/base.html
custom4 flag for xsession