Truncate long string in "Search for" menu item

If i select all the text in a long string and right click i see a context with a wide menu item:

    Search for "[really loooooooooooooooooong string]"

I suggest using something like:

    Search for "[really looooo..."

The context menu can become wider then the screeen so the screen width issen't a maxium width for the context menu.

Virtaal 0.7.1
Windows 7
