Unnecessary $replace rules warnings in the log

[ameshkov]

See the details here:
AdguardTeam/AdguardForWindows#2929

WARNING, AdguardSvc, 13, 30.08.2019 20:45:21.392, Adguard.Core.Common.Logging.CoreLoggerAdapter | urlfilter: urlfilter_applyreplace(): Can't apply replace rule '||focus.de$replace=/autoPlay:[\s\S],autoStickiness/autoPlay:false,autoStickiness/,important,~script,~stylesheet,~xmlhttprequest' -- UTF-8 error: isolated byte with 0x80 bit set
WARNING, AdguardSvc, 13, 30.08.2019 20:45:21.395, Adguard.Core.Common.Logging.CoreLoggerAdapter | urlfilter: urlfilter_applyreplace(): Can't apply replace rule '||focus.de$replace=/autoPlay:[\s\S],autoStickiness/autoPlay:false,autoStickiness/,important,~script,~stylesheet,~xmlhttprequest' -- UTF-8 error: isolated byte with 0x80 bit set

Currently, we're using UTF-8 instead of Latin1 and this could cause issues like that.

Possible solutions:

• If a regex does not contain any UTF-specific characters, use Latin1
• Just use Latin1 for this type of rules

[vshlobinag]

core/pull-requests/1490

The problem was with parsing 2 woff2-font binary files that should not be parsed. No encoding changes needed.