CRM-1215: Add owner field to Channel entity
   - added field to entity
   - added migration
   - added field to form
   - added proccess of this field to JS form refresh
CRM-1215:  Add owner field to Channel entity
   - refactor form listener
   - added unit test
   - added functional test
CRM-1215:  Add owner field to Channel entity
   - code style fixes
   - added validation
CRM-1215: Add owner field to Channel entity
    - added test for setters getters
CRM-1216: Add owner to Contact and Account entities when sync through the channel
   - added owner helper
   - added tests for owner helper
   - code style fixes
CRM-1216: Add owner to Contact and Account entities when sync through the channel
   - minor code style fixes
CRM-1216: Add owner to Contact and Account entities when sync through the channel
   - minor changes
CRM-1215: Add owner field to Channel entity
   - CR fixes
CRM-1215: Add owner field to Channel entity
   - minor fixes in service declaration
Merge branch 'task/CRM-1215' into task/CRM-1216
Merge pull request #1942 from laboro/task/CRM-1215

CRM-1215: Add owner field to Channel entity
Merge branch 'feature/CRM-1191' into task/CRM-1216
Merge pull request #1944 from laboro/task/CRM-1216

CRM-1216 Add owner to Contact and Account entities when sync through the channel
BAP-4366: Remove unused knp-paginator bundle
 - removed unused dependency
Merge branch 'master' into feature/CRM-1191
CRM-1227: Add set owner for existing data
    - Added event class
    - Added processing of owner set in handler
    - Cover by unit test
CRM-1227: Add set owner for existing data
   - minor changes
CRM-1227: Add set owner for existing data
   - minor fixes
   - imrpove functional test abstract test case
CRM-1229: Update documetation
   - split existing documentation to separated files
CRM-1229: Update documetation
   - added documentation
   - fix typo