manifest.json: update homepage_url

[blueyed]

Ref: #39

[blueyed]

Note that it is also referenced in

compactheader/build.xml

Line 6 in 77b4035

<property name="mozdev.dir" value="${src.dir}/../../workspace/compactheader.mozdev.org"/>

, but that should likely be kept?

[Cai0407]

It is better to link to ATN, not to AMO.

https://addons.thunderbird.net/thunderbird/addon/compactheader/

Link on github top page also need to be updated.

[blueyed]

Thanks.

Link on github top page also need to be updated.

Yeah, that's the one I've used.

[jmozmoz]

Thanks.

Link on github top page also need to be updated.

Yeah, that's the one I've used.

Which link on which page do you mean?

[blueyed]

At the top of https://github.com/jmozmoz/compactheader.