[dev] Splitting Agora comment per app tables

[Duck]

Again I encounter the same old problem of slowness of DT. I have a project 
with more then 150  thousands comments in one app and 70 thousands in 
another. Now the project needs a separate forum. 

This project already has integrated IMP and Ansel so I would like to move all 
the commenting staff to Agora. But Agora accessing is slow because of 
DataTree usage.

The fist possibility that will definitely help, it would be separating the 
forum part and commenting part for every application to its own DT root and 
attributes table. But how to do this. I cannot just trick DT configuration 
parameters since will affect the “hosting” application itself. Ex Ansel 
shares.

Is possible to retrieve an configuration option from anther app thought 
registry? So I can set something like $conf['comments']['params']['table'] in 
the comment section of the hosting application configuration.

The next improvement will be flattering attributes but this is to much complex 
for now.

Duck