Bigger Combox lists

[Dekel Tsur]

Why the heights of the Combox lists are so small?
For example, in the Citation popup, the list shows only 5 keys at a time,
which makes it very difficult to use if you have large bibliography database.
This can be fixed by changing line 87 of insets/insetbib.C from
    bibcombox->add(80, 10, 130, 30, 120);
to
    bibcombox->add(80, 10, 130, 30, 300);
(or maybe more than 300)
Other instances of the combox list should also be enlarged.