[Bug 1874] See who's in a particular custom filter when posting

Conflicts:
	htdocs/js/jquery.postform.js
bug 5225: adding vanishing skip link to free site scheme. looks unfortunate in IE 7 (unsupported) due to ie 7 completely flaking out when an empty, unstyled div (or a contenty, styled div) is placed above the logo.
(bug 5147) Initial work
bug 5232: when placeholdering, the direct link shouldn't be in the placeholder's div
(bug 5147) Show up properly on notifications interface
[Bug 1874] improved query methodology, closed some security holes and
added some error/sanity checking.  Also now sorts the final list.
removing superfluous <div>
(bug 5147) Allow different query settings for different related events
(bug 5147) Call local raw_subscription method per related
(bug 5147) Convert opt_gettalkemail into ESN subscriptions

Either:
 * temporarally in raw_subscriptions
 * permanently when visiting subscription management
(bug 5147) Pass scratch, remove Dumper calls
(bug 5147) remove all traces [ except conversion ] of opt_gettalkemail
(bug 2288) move checkforusername to routing

This wasn't a true __rpc_... endpoint, now it is
(Bug 4176) Support notifs should include username

Notifications of new support requests now contain the username or
(for logged-out requests) name provided by user. Notifications of
follow-ups to support requests now contain the username of the
person who left the response. I do not allow for anonymous follow-
ups because as far as I can tell they can't happen.
Merge pull request #455 from woggy/thisisatestbranch

[Bug 1874] See who's in a particular custom filter when posting
Merge pull request #466 from anall/feature/bug2288-checkforusername

(bug 2288) move checkforusername to routing
Merge pull request #427 from kaberett/bug4176-support-username

Bug4176 support notifications should include username
(bug 4907) Enable redirection for ios homescreen icons in S2

Added configuration instructions in doc/config-local.pl.txt
with commented-out version which works with current dw install.
Header linkref for ios homescreen icon is added if config
variable is present in any page served through S2.
Merge pull request #465 from dwmc15873/bug4907-ios-icon

(bug 4907) Teach S2 to serve up icons for iOS
(Bug 5154) Only print the multiform start if we have comments

Fixes a non-matching form tags issue