Feedback: search should make it clear if there are more results

[sethladd]

Specific feedback from https://github.com/dart-lang/dartdoc/issues/920

"It is not clear that the presented methods are a subset of what is available."

cc @rakudrama

[kwalrath]

Yes, please. There should be an option for a search results page. For example:

1. Go to https://www.dartdocs.org/documentation/flutter/0.0.32-dev/cupertino/cupertino-library.html. You can see there's an Animatable class there.
2. Enter Animatable in the Search box.

You're offered only a few results, all in the animation lib, not the cupertino lib. (You can't even tell that none of the results are from the current lib, though, unless you click them.)

Having a search results page would give us more space to display (1) context and (2) more results.

[keertip]

With the new search experience, the user can get to all the results with a search results page. The page also there is a shows the number of results.