* Add a reference from the community page to the bug reports page.
* Make it possible to subscribe to lists right from the community page.
Improve the email input boxes with placeholder text and a short
explanation on hovering.
See in-code comments for how this is just a rough feature to be used if
needed (and improved when it becomes necessary). That can just as well
go to the FIXME of using a string constant.
* Add captcha url (unused, yet)
* The second argument to `call/input-url' can be a one-argument function
since the call doesn't send it any headers.
Still needs to be done: check the HTTP response for an error status, and
make it fail as a result (currently it just assumes that any response is
fine, which can change in case of a captcha failure). Then, add a
captcha challenge if one is found, otherwise ignore.
necessary modules are now "all.rkt"s; "shard.rkt"s turn to
"resources.rkt".
Also, "navbar.rkt" changes to "all.rkt", since it was doing the same
thing (in addition to setting the navbar).
Ie, the difference between using it as a language and as a module is now
the same in both. Also, improve `scribble/html' (and
`scribble/html/htmllang') by reproviding most of the corresponding text
modules.
Change `meta/web' accordingly, and improve code by making a new langugae
(`#lang meta/web'). This language is similar to `scribble/html' except
that it uses the plain scribble reader (not the `-inside' one), it
doesn't use the customized module-begin feature (that uses
`output-xml'), and it adds all the relevant bits of `meta/web/common'.
(Also, "meta/web/common.rkt" is gone, since it's used only as a language
now.)
This commit has lots of details and binding games, so it's tricky, and
potentially caused some problems. (Took me a while to track many
breakages, so I won't be surprised if there are more.)
