IDEA-27 Jangaroo 0.9 plugin does not work with IDEA 13

Reduced method complexity (extract method) and improved properties compiler error handling.
IDEA-27 Jangaroo 0.9 plugin does not work with IDEA 13

Fixed EXML test compilation: do not generate an XSD for EXML test classes.
Fixed XSD generation: config classes of all referenced modules were
  included in the XSD, too, because of an exmlc bug.
Fixed "forTests" mode: there are separate moduleBuildTargets for
  production and test, so the compilers do not have to be called
  twice.

UI workspace can be built and rebuilt from IDEA and everything
seems to work. Only the generated JS files are not yet copied to
webapp output directories.