SFGate - anti-ad blocking fix

[lukemulks]

SFGate.com has custom ad calls that bypass shield blocking.

Migrated from brave/browser-laptop#6635

At the time the original issue was submitted, I hadn't been familiar with our about:adblock custom filter options, so I had labeled as a siteHacks fix.

The following filter has tested and effectively blocked the ad calls from taking place on sfgate.com with Shields Up.

||aps.hearstnp.com^$script,image

The above filter will also cover the ad calls on other hearst domains, aside from SFGate.com.

I'm going to submit a PR that includes two other filters that were discovered as bypassing shields. Separate issues for those, as they're more global than this hearst-specific case.

[lukemulks]

PR #18

[lukemulks]

merged