Merged in akakunin/activiti-liferay (pull request #12)

avoided non-required dependencies. Removed extra imports
Merged emdev-limited/activiti-liferay into master
Merged emdev-limited/activiti-liferay into master
Added capability to filter process instances by definitions on the UI.
Bug fix.
Merge branch 'master' of https://afilippov@bitbucket.org/afilippov/activiti-liferay.git
Merged in afilippov/activiti-liferay (pull request #13)

Added capability to filter process instances by definitions on the UI.
1. Check 'candidateGroups.startsWith("#{liferayGroups.getGroups(")'
added to keep intact direct group statements (SignavioFixer).
2. Extra method for synchronous messaging added to MessageProducer.
Merged emdev-limited/activiti-liferay into master
Merged in afilippov/activiti-liferay (pull request #14)

Couple of changes
Merged emdev-limited/activiti-liferay into master
Migrated to Activiti 5.13.
Known issues:
1. null as an activities comment authors
2. null as state value
Merge branch 'master' of https://afilippov@bitbucket.org/afilippov/activiti-liferay.git
Pom version improved to previous to sync up with Activiti version
Merged in afilippov/activiti-liferay (pull request #15)

Migrated to Activiti 5.13
Merged emdev-limited/activiti-liferay into master
Merged emdev-limited/activiti-liferay into master
Cherry-picked
https://bitbucket.org/emdev-limited/activiti-liferay/commits/f6c991c693859fe7c32db904707c5440c0562258
Cherry-picked
https://bitbucket.org/emdev-limited/activiti-liferay/commits/087c7a885dd77f720cef7d0d612d70f0638380c5
Cherry-picked
https://bitbucket.org/emdev-limited/activiti-liferay/commits/212276828413bb701899fe39a0889fe20f5f0ebb
Fixed http://cloud.emdev.ru/group/bpmn-portal/tasks/-/task/2413
Fixed http://cloud.emdev.ru/group/bpmn-portal/tasks/-/task/2604
(Cherry-picked from
https://bitbucket.org/emdev-limited/activiti-liferay/commits/1336695fc35e8be8b93d7e3ffd6126bf916a2c52)