Better sorting of system libraries in search results #249
Description
Case in point: https://source.dot.net/#q=dictionary%3Ctkey
Whenever I search for some built-in class in .NET, I expect results from System.* to be at the top, but very often it prefers some specific libraries like CodeAnalysis which are almost never relevant.
It's even worse if you simply search for "dictionary": https://source.dot.net/#q=dictionary
it's slightly better when capitalized, but still not great: https://source.dot.net/#q=Dictionary
