#32 improve direct editing

[g zombi]

When I click on "Edit table data" the full table is
loaded to mem, this will cause OutOfMemoryError if the
table is very big, however i want to modify just one row.
So please :
1, do not load data, just after the user entered a
"where" statement
2, automaticly limit the loaded rows. (eg, 10 or 100 rows)