fix(Doc) Hint to Maven Nexus Server for Download WARs
feat(user-guide): add camunda:script as execution listener

related to #CAM-2360
feat(rest): form variables

- document form variables for tasks and process definitions

related to #CAM-2436
chore(guides): migrate getting started guides

related to #CAM-2285
chore(user guide): add filter examples

related to #CAM-2121
fix(user guide): fix links to roundtrip with other BPMN 2.0 Modelers

related to #CAM-2477
feat(user-guide): add camunda:script as task listener

related to #CAM-2361
fix(links): changed links for supported version

related to #CAM-2474
feat(bpmn20): add script as possible condition of sequence flows

related to #CAM-2359
chore(formVariables): adjust REST Api docs

relate to CAM-2437
chore(cockpit/filter): adjust section about filter possibilities

related to CAM-2121
chore(cmmn): provide docs about implemented elements

related to CAM-2466
chore(scripting): move script source section to user guide

related to #CAM-2489
feat(user-guide): extend scripting section

- add scripts as execution listener section
- add scripts as task listener section
- add scripts as condition section

related to #CAM-2489
chore(enterprise): update download 7.2.0-alpha3
feat(user-guide): add templating section

related to #CAM-2451
fix(cmmn): proofread and correct

related to #CAM-2466
fix(user guide): proof read and correct templating section

related to #CAM-2451
chore(scripting): consistency in headers and xml

related to CAM-2489
chore(user-guide): add script variables task and connector