- Allow boolean "truevalue"/"falsevalue" to be used in plain (non-conditional test element) parameters (see https://trello.com/c/iGk3f1pE).
- Fix conditionals to use processed values - so this fix and 5b6c092aa0 are applid to these elements as well. (http://osdir.com/ml/general/2015-05/msg24402.html).
This also adds tests to verify these behaviors.
Run most relevant tests with commands:
./run_tests.sh -framework -id simple_constructs
./run_tests.sh -framework -id multi_select
./run_tests.sh -framework -id boolean_conditional
