improve(cockpit/tree): change the activity state icons
improve(cockpit/tree): change the activity state icons

xlinur/camunda-bpm-webapp,nagyistoce/camunda-cockpit-ui,TitanUser/camunda-bpm-webapp,xlinur/camunda-bpm-webapp,tcrossland/camunda-bpm-webapp,tcrossland/camunda-bpm-webapp,nagyistoce/camunda-cockpit-ui,xlinur/camunda-bpm-webapp,TitanUser/camunda-bpm-webapp,TitanUser/camunda-bpm-webapp,tcrossland/camunda-bpm-webapp