Search should never filter the `Links` column

Hello Scancode Team,

I'm aware of #16 and #30, but since those issues are only related, I'm opening another one with a simpler request.

When searching for the [JSON](https://spdx.org/licenses/JSON.html) License, the search slows down the page dramatically and then returns ALL licenses, since the `Links` column contains links to a json representation for each license.

Since there is no use case where you would want to search for the link captions, which are equal for all licenses, **I propose to exclude the `Links` column from the search.**

This could be done before investing time into a proper solution, like the one suggested in #30. Those could still be revisited at a later date, to fix the column-search-problem in all cases.

Kind regards
Jens Keim (JJ)
FOSS Team HELLA Aglaia