chore(cockpit.base-plugin): restructure files
Merge branch 'master' of github.com:camunda/camunda-bpm-platform
feat(cockpit): Add incident badge on activities

- If there are any incidents in a process instance on the aggregated view
  of the corresponnding process definition any badge containing "!" will
  be displayed on the activities wich have the incidents.
- On the process instance view the corresponding incidents are shown too.
- Add some test cases

related to CAM-785
fix(cockpit): Show incident badge always as last

- fix that the badge which represents at least one incident will always be
  displayed as last one (behind other badges)

related to CAM-785
fix(variables): Show variables in instance view

- All variables are initially shown in the process instance view

related to CAM-780
refactor(cockpit): add multi-tenacy + various improvements

multi tenacy
- add a servlet filter that serves cockpit from /app/{engineName}/ paths
- refactor filter infrastructure
- add multiple two more engines to dev setup
- add client side drop down to choose current engine
- current engine is read from url
- add replace support for :engine with current engine in Uri#appUri

other changes / improvements
- update main index.html to use absolute path rather than relative one
- migrate message structure from Errors to Notifications
- implement resource resolving

other cleanup being done
- remove unused root controller
- fix spacing all over projects
- fix usage of ' in place of " in may files

Closes CAM-879
chore(qa): make signavio coodinates configurable
Merge branch 'master' of github.com:camunda/camunda-bpm-platform
chore(qa): add maven props for signavio
impr(cockpit): add load indicator + bpmn20 xml caching
fix(cockpit): use correct pathing for multi-tenacy

Related to CAM-879
Merge branch 'master' of github.com:camunda/camunda-bpm-platform
feat (engine): Multiple Instance now works with empty collections

closes CAM-879
improve(cockpit): no such engine error message

- improve "no such process engine" error message
- fix select box markup bug

related to #CAM-879
fix(cockpit.multi-tenacy): use Cockpit service to resolve default engine

- engine is now provided soley via ProcessEngineProvider SPI
- consolidates the cockpit+rest api structure

Related to CAM-879
Merge branch 'master' of github.com:camunda/camunda-bpm-platform
impr(cockpit): add help text to engine selection

related to #CAM-829
Merge branch 'master' of github.com:camunda/camunda-bpm-platform
feat(engine): extend usage of process definition suspension state

- cascade suspension to process instances and tasks if desired
- only allow task interaction for active tasks
- only allow event receiving for active executions

contributes to CAM-447
improve(engine): update deployment cache if required

- fixes inconsistencies if process definition is
suspended while a non-suspended version still exists
in the deployment cache

contributes to CAM-447