RFR: 8208663: JDK 11 L10n resource file update - msg drop 20

[li.jiang at oracle.com]

Hi,

Please review the changes for JDK 11 L10n resource file update msg drop 20.

Webrev:
http://cr.openjdk.java.net/~ljiang/8208663/webrev/read/open/

Bug:
https://bugs.openjdk.java.net/browse/JDK-8208663

The new strings in 
src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/resources/standard_*.properties 
got translation.

Thanks,
Leo