Updated lots of tests, based on jextest
Introduced jextest-based tests on older exercises.
no.hal.jex.collection now uses jextest and must have proper
dependencies.
Icons for sokoban1
Updated RPN to match wiki text and use jextest.
Regenerated after updating jextest generator.
Fixed missing initialization.
Added jextest feature project.
Updated jextests to avoid over-overloading of == utilize void methods
with assert.