fix(user-guide): rename cockpit and Tasklist url

closes: CAM-1031
fix(rest-api): fix Request Body of create user function
fix(rest-api): rename array to object in create user function
feat(rest): add note on Authorization Exceptions

related to #CAM-1036
feat(stacktrace): get job exception stacktrace doc

related to CAM-976
fix(installation-guides): update cockpit/tasklist

Closes CAM-1033
doc(rest): authorized operation links user & group

related to #CAM-1040
chore(docpad): adjust docpad installation
chore(docpad): adjust docpad installation
fix(docpad): update partials plugin version to ~2.7.0

- runs with latest docpad versions
feat(jboss): doc jboss subsystem in userguide

related to #CAM-1008 but broader in scope
fix(userguide): typos
feat(incubation): add camunda BPM camel
fix(navigation): change guides index from h2 to ul

Closes: #CAM-1028
Merge branch 'master' of github.com:camunda/docs.camunda.org
fix(docpad): remove progress bar on generation
fix(install-guide): fix links to chapters
feat(bpmn-overview): mark send task, send events in bpmn coverage
table
feat(bpmn): add send task
feat(bpmn): add message end event and message throwing event