ACT-260 only using namespace prefix for activiti-attributes used on BPMN2.0 elements and custom elements used in customExtentions

ACT-251 ACT-258 ACT-267 added improved form history search capabilities and moved method getDeployedProcessDefinition to impl

Removing .swf files (which we do not use anyway) for security reasons stated at http://yuilibrary.com/support/2.8.2/

removed cycle.jar from lib directory (is contained in webapp-rest/WEB-INF/lib with is sufficient, and shouldn't be on the classpath twice)

removed DTO for RepositoryArtifactLink (can use Entity directly), fixed queries to use connectorId as well, renamed "DESCRIPTION_" to "COMMENT_" in Link and added it to REST-API

ACT-265 process-engine is always registered to ProcessEngines + ReflectUtil extended to use custom classloader chain

fixed visualization of transformation exceptions, debug info should now be rendered as HTMl instead of being offered as download

modified JSON representation of artifact links to make it easier to transform with XStream, added visualization of transformation exceptions

HEMERA-119: Implemented first version of tags and tag connector, finished refactoring to remove "currentPath" and renamed "originalNodeId" to "nodeId", removed some unnecessary old classes, renamed DAO classes