[patch] JOSM search by preset in the search dialog

[bafonins]

Currently, there are two menu entries to perform searching - "Search" and "Search for object by preset...". And functionality to search for osm objects is very limiting, namely there is no way to search for two or more presets at the same time, it is not possible to add object that match the preset to the current selection and etc.
I propose to merge these dialogs, actually adding functionality to search for presets to the search dialog. Then queries like
preset:water | preset:waterway or
preset:Village | preset:"Cave Entrance" | highway=motorway
can be performed + the selection settings from the search dialog can be used to control selected objects.

Also, we can embed the "Search for objectsby preset..." dialog intro the "Search" dialog in order to simply select needed presets and append 'preset:...' query to the text field.