Remove bb model from project, replaced it with custom queue for knockvm

So there is no model/meta module anymore, it's replaced with:

sync/datamap which contains functions to translate to and from server
             representation of data types

sync/crud    which work like queue of changed values, that can be stored
             using crud layer, it also handle errors somehow and not
             loosing data in case of it

Also I have to upgrade knockout 2.0.0 -> 2.2.0, because newer version
can handle loops when computed observable defines new observables in it's
read function, so now outermost is not recomputed untill all inner ones
will not finish.