[RFC] Refactor adm_back_link usage

[Oleg]

Currently most of ACP is unusable from a script due to adm_back_link calls which might be doing or require user/session setup or other interactive stuff.

The code should be rewritten to separate actual work from UI, such that the work code can be scriptable.

[bantu]

Absolutely.

[Oleg]

It just occurred to me that adm_back_link calls can probably be trivially replaced with exception throwing.

[igorw]

Just because we're already abusing trigger_error for displaying messages to the user does not mean we should now use exceptions for the same thing. If we fix it, we should fix it properly.

[Oleg]

Do you mean with special return values?

[brunoais]

how are we about this?