Added pytyon compare images module
Work in progress
Adding testing infrastucture code
Added script to setup runtime for testing
Added option to set VGL baseline directory
Merge remote-tracking branch 'origin/bug#10_add_selenium_regression_testing' into next

* origin/bug#10_add_selenium_regression_testing:
  Added option to set VGL baseline directory
  Added script to setup runtime for testing
  Adding testing infrastucture code
  Work in progress
  Added pytyon compare images module

Conflicts:
	src/testing/CMakeLists.txt