docs: clarify that .d and multiple .ini files only apply to unix

- closes COUCHDB-2104

Thanks Ole Johan for reporting this
Fix the build for the d3 update
Fix Fauxton dependancie issues

I've modified nv.d3 to be an amd module. This isn't pretty but it's the
best fix, otherwise we cannot use this library.

I've also added a new config in settings.json.default for couchapp
deployment as the current release config doesn't work with a couchapp
s/max/max_count
s/401/403
minor documentation fix
change the documentation for unix

the testsuite in Futon is not linked anymore (/_utils/couch_tests.html)
but there is the verify installation page. Changed the docs accordingly.