feat(orderBy): Offer order by functionality

related to CAM-799
feat(incident): Add testcases to test runtime api

- Add some test cases to test the exposed method to create a incident
  query in the runtime api

related to CAM-799
feat(incident): Incidents in statistics queries

- support of incidents in statistics queries

related to CAM-799
feat(db): add compounf index in HI_ACT_INST_ table

- add index in HI_ACT_INST_ table for improving runtime performance.

related to #CAM-684
feat(incident): Support incidents in REST-Api

related to CAM-799
Merge branch 'master' of github.com:camunda/camunda-bpm-platform
fix(db-qa): Adjust versions and ProcessEngineConfiguration
fix(tests): increase timeout for failed job test
Merge remote-tracking branch 'origin/master'
feat(circle): Add directive to create a circle

- add directive to create circle which will be green or red.
- the circle will green, if no incident were found and red if a incident
  was found
- add some testcase to test circle directive

related to CAM-706
Merge branch 'master' of github.com:camunda/camunda-bpm-platform
fix(upgrade-qa): Fix database upgrade QA for 6.2 to 7.0

Refactor maven artifact GAVs
Adjust versions

related to CAM-800
fix(test): increase timeout

some qa environments are too slow
Merge branch 'master' of github.com:camunda/camunda-bpm-platform
improve(rest): change variable handling to common variable format

- makes variable representation consistent across all methods
- updates test expectations accordingly

contributes to CAM-765
feat(cockpit-incidents): Add support of incidents

- the cockpit plugins uses the incident infrastructe to show
  whether a process instance/definition failed or not
- refactor the process instance query including pagination and incidents
- add testcases for process instance query

related to CAM-706
Merge branch 'master' of github.com:camunda/camunda-bpm-platform
chore(tasklist): adapt to rest api variable format change

contributes to CAM-765
refactor(RestIT): use installed invoice demo for asserts

reduces external dependencies of the test
Merge branch 'master' of github.com:camunda/camunda-bpm-platform