fix(logout): remove start-process icon

Closes: #CAM-1098
feat(engine): Add toString() method.

related to CAM-949
chore(dataDepend): Use new Api in cockpit
chore(jobs): Shows jobs with retry equals 0
chore(tiles): State is now red or green

related to CAM-1101
feat(engine): enable async start events

- a start event may be declared async such that on execution, a new
process instance is created, but no activity executed yet

related to CAM-424
fix(jobs): Show activity scope in jobs table
Merge branch 'CAM-949-toString' of github.com:polenz/camunda-bpm-platform into polenz-CAM-949-toString
fix(upgrade): re-add upgrades lost in merge

- add upgrade statements for historic activity instance table

related to #CAM-1092
Merge branch 'master' of github.com:camunda/camunda-bpm-platform
fix(webapps/navigation): fix separator not leaving

- add an additional separator remove hook that is called on scope$destroy

Related to CAM-1098
Merge branch 'master' of github.com:camunda/camunda-bpm-platform
Merge branch 'master' of github.com:camunda/camunda-bpm-platform
chore(wait): Adjust creation of incidents
fix(typo): Fix typo in process instance view
fix(cockpit): fix $routeChange silencing directive

- search directive silences $routeChange event only when the url changed
  during search.updateSilently() (and thus a $routeUpdate event is
  expected).
fix(distro): Remove tasklist from pom.xml
 Prepare release: set version to 7.0.0-alpha9
 Next development version: 7.0.0-SNAPSHOT
 Prepare release: set version to 7.0.0-alpha9