RFR: 8273655: content-types.properties files are missing some common types [v2]

[Brian Burkhalter]

On Thu, 16 Sep 2021 15:28:36 GMT, Julia Boes <jboes at openjdk.org> wrote:

>> This change adds some common types to the content-type.properties files, notably .js, .css, and .jar, as well as some others. 
>> 
>> The duplicated entry for .zip is removed from the Windows properties file.
>
> Julia Boes has updated the pull request incrementally with one additional commit since the last revision:
> 
>   address PR comments and refactor test

Marked as reviewed by bpb (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/5506