Show executed queries in dialog box

I implemented queries list in separate dialog. It looks quite ugly now, but allows to see executed queries with parameters, timings and call stack. The code is based on http://stackoverflow.com/questions/13275569/how-to-view-db-queries-generated-by-tablegateway-in-zend-framework-2

The link to the box is added to the db hover
![db toolbar link](http://i.imgur.com/g9UOzfl.png)

On click - dialog with queries appears
![queries dialog](http://i.imgur.com/v978txw.png)