Baseuri master

After my yesterday pull request and the resync with upstream, I realized that packed assets are part of the repo itself. But they were not included in the changeset, so people cloning the master would likely not be able to use the new baseuri feature.

The baseuri-master branch I herewith kindly ask you to pull, corrects this issue.

Also, current changes contain further modifications to absolute URL for the baseuri feature - using them more features (hopefully all (?)) should now work for installations, these urls were missed due to a too specific regex used in searching for them.

Thanks a lot!
peter