New reporting engine - Inventory kit

[Patch]

@Davide

I only ask not to delete the old reporting until they will be fully implemented and working.

@lubos

so this new custom report engine can fully replace the old one. By having both in the system at the same time is holding me back.

I have know idea if it would help but the:

• From … General Ledger Transactions

option could be removed from the “Custom Reports (obsolete)” as the new “Custom Reports” completely superseded it in my opinion. That would leave the static data, however doing this may hold you back more than just leaving it.