Feature #569 Load/Save Query By Example

Hi,

I tried to implement this feature: https://sourceforge.net/p/phpmyadmin/feature-requests/569/
The aim is to be able to save/load (and delete) a QBE on a DB and so you'll be able to run the same query easily.

A new table had been created: pma_savedsearches
I'm not sure about all the things to do to add a table, so fell free to tell me if I forgot something.

The po files had not been updated as advised on the wiki (http://wiki.phpmyadmin.net/pma/Gettext_for_developers#Updating_.po_files).

Thanks for your feedback.