[groovy] added a groovoy filter, [utils] added methods to perform filter/iteration on collections [service] added management of data sources with cache, [bugtracker] added framework to handle bugtracking plugins [queries] added abstract implementation of dynamic data queries to basic usages [api] refactored dynamic data source api
[bugtracking] added closure for kpi and fixed  a design problem with data source connectiosn
[groovy, spring] huge refactoring of groovy engine to write better query scripts, refactored bugtracking plugins now with unit tests
[kpi, groovy] fixed mistakes in groovy validation formula, added kpi definition interface
[unit-test] added unit test for CollectionUtil
[test] upgraded unit tests
[spring] missed implementation method
[groovy] upgraded unit test
[classpath] fixed import issues
[kpi, dsl] build preliminary dsl