ACT-2112 JtaTransactionInterceptor hides exception

It is possible that JtaTransactionInterceptor swallows original
exceptions, when an exception is thrown on rollback.
ACT-2112 JtaTransactionInterceptor hides exception

When exception occurs on rollback, the original causing exception is lost.
FIX: log.error the original exception upon throwing the new one.
Add a time property to the Attachment entity and corresponding column on ACT_HI_ATTACHMENT
fix http://jira.codehaus.org/browse/ACT-2123, add sequence label
change tab to space
replace deprecated method
Added support for compensation event definitions by using 'org/activiti/icons/compensate-throw.png' and 'org/activiti/icons/compensate.png'
Register rollback listener before executing the job
Fixed pom.xml

Added <activiti.artifact/> property in POM in order to generate
proper BundleSymbolicName OSGi manifest entry.
Fixed getPath()

Replaced hardcoded "bundle" protocol with call to
URL#getProtocol().
Fix Spring deployment test
[Docs] More docbook remnants removed
Fix for https://jira.codehaus.org/browse/ACT-1980: ProcessInstanceQuery with includeProcessVariables does not retrieve processDefinitionId in MSSQL
Documenting CDI task events
Merge pull request #457 from dmandalidis/userguide/cdi

Documenting CDI task events
[Docs] Removing docbook files
[Cleanup] Removing angular web module (prototype done loooong time ago)
inittial commit of exception handling test cases
checkpoint for camel exception test cases
sync, not working for asynchronouse tasks