Add the dataTable class in each forms

The tables in Studio / GWT doesn't have the "vertical-align: top" style by default.
If a field has 30 lines of data, the associated label will be displayed in the middle, and the form will be hardly readable.

The .dataTable class only handle a vertical-align:top rule, it can have a width:100% too if needed, to avoid adding it in .java files.

See screenshot.