Fixed compilation (IDEA API changed).
Fixed test data according to fixed bug in IDEA JPS.
Fixed compilation error (IDEA API changed).
Fix stepping test's testData
Fix tests with annotations: enum constants are now resolved as constants in JavaConstantExpressionEvaluator
Registering extension points manually in JetCoreEnvironment. They are not registered by IDEA's core environment code anymore.
Now PsiElementFinderImpl is registered via extension but it hadn't been added to JavaCoreProjectEnvironment
Manually register extension points