casts for the handshape are put in the acceptor generalized.

The functionality lives outside of the elastix project and serves as
toy example / prototype, without being complicated by ITK compatibility.

ENH: ELASTIX-1 Add unit test XML report and test harness for handling configuring test data at test compile time

ENH: ELASTIX-1 Add dockerized Elasticsearch, Logstash and Kibana dashboard for viewing unit test results and associated documentation

Test data can now be added by only placing a content link in the
Testing/Unit/Data/Input and Baseline folders. Prevously, the dev
also had to add the path of the content link to a CMake variable.