To many things are not working :(
- addressbook, infolog, even timesheet index lacks at least r/o textbox and problably other widgets
- smallPART (with many extra widgets) is completly unusable
- *box widget seems not to skip empty boxes
--> we need more testing and progress, before we can merge that
This reverts commit 9cee681b94.
- evaluate class set on a grid cell as done for the widget contained (probably more a bug-fix then a feature)
- allow to preset query for link-entry widget by passing an object with a query attribute
- allow to overwrite not only $readonlys[__ALL__] but also widget readonly attribute with a $readonlys value of false
