Change wording of back button and keep search query across navigation

[cbenz]

Fixes #54

[MattiSG]

Issue: if I arrive on the details page from a direct link, this “go back” button doesn't mean anything to me. Solution: “See the ${research results count - 1} other variables and parameters”.

[MattiSG]

Please don't force-push while in the review process. This makes it impossible to track changes since last review, thus making the reviewer's job very hard.

[cbenz]

@MattiSG I tested by replacing this line by:

-  return concat(matchesInName, matchesInDescriptionOnly)
+  return [concat(matchesInName, matchesInDescriptionOnly)[0]]

Here is the result: