Used slightly different approach. This tab is fully build in source code
using subclasses to adjust behaviour of widgets for reuse in the other tabs.
Uses custom proxy model for filtering triggers for correct table and supporting
out of the box sorting by QTableView.
SqlCodePreview: QPlainTextEditor which sql highlighter and in readonly mode but allows copy.
model is reset as this will clear all selections.
Unfortunatly the selection model does not trigger a selectionChanged when
the model is reset.
Close#16
For now the create is still single line. Either complex query is required
to get details for custom generator or we need to format after the fact.
Close#12
The old name followed the pattern used by Qt to automatically deduce what signal should
be connected to which slot. However as these are signals from a sub object it cannot find
them and I have made the connections manually. To prevent getting warnings at runtime
I changed the name.
