This shows an unrelated error:[ERROR] Request to http://localhost:4502/crx/packmgr/service.jsp failed, response=Internal Server Error

Can you post the full output when running Maven with -X ?

This is due to an issue with specific versions of Maven (2.2.1 I believe). This should be fixed by simply using the latest content-package-maven-plugin version (0.0.20). And potentially upgrade Maven to the latest (3.1.1) as well, although I recognize that this can be more challenging in some enviro...

Johan is correct - the Link Checker has a rewriter pipeline component which looks at all of the <a> and <form> tags on a page (there might be one or two others) and looks at the appropriate HTML attribute to extract the link.These links could be hard-coded in the JSPs or they could be dynamic based ...

This is not the correct way to get the current runmodes. You should use the SlingSettingsService and the getRunModes() method.

There aren't any generators or serializers ootb which handle plain XML. I'm in the process of adding a generator to ACS AEM Commons: https://github.com/Adobe-Consulting-Services/acs-aem-commons/pull/48, but it sounds like there would also be a use for a serializer.

Take a look at http://docs.oracle.com/javase/tutorial/collections/interfaces/order.html. That explains how to write a Comparator.

If you have a list and you want to sort it, use Collections.sort(). http://docs.oracle.com/javase/6/docs/api/java/util/Collections.html#sort(java.util.List, java.util.Comparator)

The best thing to do in this case is to set the allowUpload property to false for the html5smartimage widget. This will prevent the direct upload of assets and only allow referencing a DAM asset.

Embeds are not transitive. If you want clientlibA to embed clientlibB and clientlibC, you need to explicitly state that.