Feature #569 Load/Save Query By Example

Implement possibility to save/load/delete a QBE on a DB.

Signed-off-by: Hugues Peccatte <hugues.peccatte@gmail.com>
Fix unsaved criterias.

Signed-off-by: Hugues Peccatte <hugues.peccatte@gmail.com>
Fix warnings.

Signed-off-by: Hugues Peccatte <hugues.peccatte@gmail.com>
Add confirmation before deletion.

Signed-off-by: Hugues Peccatte <hugues.peccatte@gmail.com>
Add hint to update a search.

Signed-off-by: Hugues Peccatte <hugues.peccatte@gmail.com>
Fix merge conflict

Signed-off-by: Marc Delisle <marc@infomarc.info>
The word "criteria" is already a plural

Signed-off-by: Marc Delisle <marc@infomarc.info>
ChangeLog entry

Signed-off-by: Marc Delisle <marc@infomarc.info>
Update po files