Questions regarding "about" pages.

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Newsgroups gmane.comp.mozilla.devel.xpfe
Message-ID <[email protected]>
I've a few questions regarding the "about" feature in Xulrunner. 

1. How would I go about adding additional about pages, like about:robots? 
2. Is it a good idea to edit about.xhtml (as part of omni.ja) or should I rather override it with my own replacement.
3. Accessing "about:" doesn't work in my Xulrunner based browser. 

Error message: 

"XML Parsing Error: undefined entity Location: jar:file:///C:/junior/xulrunner/omni.ja!/chrome/toolkit/content/global/about.xhtml Line Number 23, Column 1:<body dir="&locale.dir;"> ^"

My Chrome.manifest:
"
content myapp content/
content branding branding/

locale myapp en locale/en/
locale myapp de locale/de/

locale branding en locale/en/
locale branding de locale/de/
"

4. Is there any Linux packaging app that is able to open omni.ja? The standard Ubuntu 13.04 archiver doesn't work, for some reason.
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