rvmi master into noetic

Add test cases for ParamHandler

Add explanations for test cases

Move test folder to correct location

Add tests for getParamValues

Remove obsolete test

Add tests for world_element

Add tests for toElement and getElementParams

Convert doctest in ConditionProperty to unittest

Add test for Conditions: Or, HasProperty and IsSpecified

Fix faulty test for setProperty

Convert json doctests to unittest

Move tests from test/core folder

Make param serialization test independent of item order