Add Interfaces for query api from Zeta Components database
Revert "Showing one insert+select statements with Doctrine API, for evaluation of refactoring towards DBAL API or writing abstraction that mimics ez Query APIs."

This reverts commit 422ab94a8c57c4942414d56b2f239b666dbdd38e.
Remove TableGateway API
Missing docblock documentation
Implementation for SelectDoctrineQuery and tests for the SQL generation (not execution yet).
Copy Subselect support from Zeta Components
Add UpdateQuery Doctrine implementation
Add DeleteQuery for Doctrine implementation
Added Expression support.
Replace EzcDatabase API to accept DatabaseHandlers and make EzcDbHandler a DatabaseHandler that fullfills the API.
Active doctrine to see the breakages.