D-Net

added mvc controller method to clear the OAI caches: oai/clearCaches.do

Cache management: it's a mess if we have more than one <cache:annotation-driven> instructions:
- the container now has a dedicated application context for caches
- logs to DEBUG for spring cache module

#1342: added caches to limit the load on exists when a client performs a list of getRecord requests.

StringUtils.split does not add empty strings in the resulting array, but I do need them, hence I use the native String split function.

Do not encode the resumption token #1310

testing variable according to the test configuration.

Testing we correctly parse scheme id and namespace

RecordInfo with provenance.

Test for IDSCHEME and IDNAMESPACE

Fixed xqueries and methods to get the id namespace and scheme.