buildbotService: rework, for better event support

New api simplifies a lot the common use cases of the controllers:
bind() now registers to 'update' events on all element of the list
e.g:
sse/add/aa4514dc-adae-4b2e-8c1f-d5037574821f/builder/2/build/*/new
sse/add/aa4514dc-adae-4b2e-8c1f-d5037574821f/builder/2/build/*/change

bind() now takes a onchild callback, which will be called at init time, and also
at event time when new child are happening. This help to populate subchilds.

See doc for more info on the new api.

+ bump up a few versions
+ re-enable coffeelint, and fix the remaining errors
+ some new pages