License not in awkward places

as discussed on ML, the license in the yaml blueprints makes them awkward to use as examples.  similarly (but not yet discussed) having them in *every* html page, since most of these are templates, can result in hundreds of copies of the license in the rendered html.  this causes bloat and slow-down at runtime.  they are not removed by any optimizer (it does not run on html).  the license is in the root `index.html` and so shows up on every page served at runtime; and they are in the JS and CSS (where they do get optimized out).
This isn't one of our yaml blueprints (it's the cassandra config file to be uploaded on install). However, it was copy-pasted (and then templated) from the standard Cassandra install.