Revised index page to link directly to quickstart
documentation rather than the (still supplied) root page.
Added .metadata as an ignored file.
Merge in cache-control branch.
Revised cache so that the keys are request URIs and the
objects are ResponseResults which are triples of ResultSet, TermBindings, and plain Bindings.
Expiry times for a request depend on the view being used.
Revising position of calculating the item count computation
so that the cache use can be pushed up as far as possible. Some systemactic renaming of
methods to specify that they return milli(second)s rather than seconds. We have a problem
somewhere where the time is not being correctly reported.
Ensured that expiresAt escapes from cache entry to create header.
Removed debugging prints.
MERGE