Use bang for "Search [service] for [query]"

[awallin]

"Search [service] for [query]" should utilize the bang search if available.

Currently saying "Search Amazon for legos" returns a Google search but should display results directly on Amazon.com.

[alexandra-martin]

The bug is still reproduced on Mac 10.14.6 and Win10x64 with Firefox Nightly 71.0a1 (64-bit).

[ianb]

I wonder if this wasn't tested on the most recent version? I just tried the specific queries search amazon for lego and got this and search goodreads for harry potter and got this

[alexandra-martin]

Usually the latest version is installed each day, don't know why it was not working then. Now I verified on Mac 10.14.6 and Win10x64 with Firefox Nightly 72.0a1 (64-bit) and it's fine.