[WIP] Allow PSR-0 and PSR-4 compliant bundles

                    
|Q            |A   |
|---          |--- |
|Bug Fix?     |n   |
|New Feature? |y   |
|BC Breaks?   |n   |
|Deprecations?|n   |
|Tests Pass?  |y   |
|Fixed Tickets|#433|
|License      |-   |
|Doc PR       |    |
                    

This is a functional WIP, comments are very welcome
all those "if base64 then decode" **clearly** should be delegated somwhere else