Show a clickable "." when there is a blank domain in the top domain lists

[PromoFaux]

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What does this PR aim to accomplish?:

Fixes #1241

[DL6ER]

This works,

however, it will still show the empty domains in the Query Log it links to:

[XhmikosR]

If the above doesn't fix the issue @DL6ER described, just drop the urlText variable and use a ternary in the url itself.

[DL6ER]

The issue I described exists on another page and is due to missing code there, not a conflict with the proposed change (which works as expected).

@XhmikosR I wonder if your suggestion (replace domain === "" by domain) is equivalent. The former does only check for an empty string whereas the latter would also be triggered by boolean false or null etc. which may be undesired.

[XhmikosR]

@DL6ER well, that's why I said maybe try with... :)

[DL6ER]

Added code to do the substitution also in the Query Logs. Pending check + merge by @PromoFaux