fix nodeBB adresses
fixed #2431
fix upgrade script #2435
fixed #2434
closes #2439
closes #2436
show warning and errors for socket.io also show info in dev
Merge pull request #2433 from bendem/patch-1

Fix nodeBB address in a few places
minor tweaks to in-topic searching UI, #2442
closes #2412
use data.url
forgot one