Switch to new relations handling (on the end client)

[kltm]

Currently using /getRelations in bootstrap, need to switch to the new handler.
Talk to Heiko if you forget (again).

[kltm]

Getting relations should actually be model specific. The current flow of getting all relations at server start-up will have to be replaced because each model could have its own import chain. Heiko for internal details.

I think that it will just be a two-stroke start-up on the end client instead of the initial server start-up.

[kltm]

Probably be part of integrating the landing page with the main editor.

[kltm]

@hdietze Are we still considering having the per-model relations call, or are we good enough with the starting meta call? It's far enough back I'm a little unsure how we stand now...

[cmungall]

Division of responsibilities between minerva and golr doesn't seem clear to me. on the one hand, golr is the general source of things in the world, is used for autocomplete for classes. on the other minerva has the semantics which will likely be required for #165

For the 2015-08 push it probably doesn't matter, all the models import go-plus which imports ro

[kltm]

Okay, talking to @hdietze, this is a bit of an historical artifact that has since been changed (we are no longer going to have per-model import chains). The change in bootstrapping was done in June, but I'll close it here as we have the final clarification.