Bug 852225 - override italics for zh-CN and zh-TW

Needed a specificity boost.
Merge pull request #732 from craigcook/bug-850431-15-year-anniversary

Bug 852225 - override italics for zh-CN and zh-TW
l10n: add an email address (temporary) for German contribute page.

This will allow them to participate in 15 years anniversary campaign.
This address is a temporary one that we will use while they have a
proper mailing list set up in Bug 856876.