Improve the select

[pinux]

I think that one of the major function in a gis software are the select tools.In general Qgis does a good job, but there are some things that can be changed to make it better (in my opinion). Here is a list of suggestion of things that I think would be ...:

1. Some type of select tools are missing (see the python plug-in select plus) like Select all, Select none, Invert selection (that is available in the attribute manager), Select polygon, Select by freehand, The search query builder, etc.

2. There should be a Select menu with all the select tools

3. There should be a select toolbar with all the select tools

4. The spatial query plug-in see patch #2634 could be integrated in the menu and toolbar

5. A search manager where the searches with the search query builder can be stored.

I don't know if this enhancement fits better with the the milestone 2.0 or 1.5 so be free to change it to 2.0 if you think so.