refactor(wordwrap): reusable functions for rendering of wrapped lines

includes better rendering of poolnames

related to CAM-899, CAM-884
feat(messages): support for "non-initiating" message flag

related to CAM-901
fix(multiinstance):use localName to identifiy multiinstance activities

fixes CAM-900
Merge branch 'master' of github.com:camunda/camunda-bpmn.js

Conflicts:
	src/bpmn/Renderer.js