BAP-5417: Add listener to disable search indexation during loading of demo data
BAP-5942: Can't install 1.4 Fatal error
- check $em for is_null
BAP-5227: Related entities should not be available in columns list on segments
   - added comments
   - fix code style
   - fix macroses
BAP-5942: Can't install 1.4 Fatal error
- fix CR
- add unit tests
Merge pull request #3025 from laboro/fix/BAP-5942

BAP-5942: Can't install 1.4 Fatal error
BAP-5227: Related entities should not be available in columns list on segments
    - minor fixes
Merge branch 'master' into feature/BAP-5417
BAP-5227: Related entities should not be available in columns list on

    - fix type
Merge pull request #3028 from laboro/ticket/BAP-5227

BAP-5227: Related entities should not be available in columns list on se...
BAP-5417: Add listener to disable search indexation during loading of demo data
  - fix search reindex
Merge pull request #3003 from laboro/feature/BAP-5417

BAP-5417: Add listener to disable search indexation during loading of demo data
Merge remote-tracking branch 'remotes/dev/master'