updt(support): include ancud as partner
add(logo): include ancud as partner
updt(bpmn.tutorial): add link to examples
style(bpmn.tutorial): fix typo
style(css): fix provider class
style(support): fix layout of support partners
chore(bpmn): reorganize main page

Move bpmn main page from /bpmn.html to /bpmn/.
feat(camunda-modeler): add standalone modeler page
feat(build): add ability to include local css/js
feat(camunda-modeler): add download page

Related to CAM-1783
chore(download): add download link to alpha2
feat(analytics): add analytics via data-track tag
feat(camunda-modeler): improve SEO and accessibility

- moved modeler page to /bpmn/tool
- add modeler screenshots as separate images
- add google analytics linking
feat(camunda-modeler): add system requirements section
feat(camunda-modeler): blur out what is not important
updt(modeler.download): add FREE to eclipse
chore(bpmn/tool): encode release in site configuration
updt(bpmn.sites): improve sea meta tags
updt(bpmn.sites): improve seo meta tags
fix(bpmn): escape forbidden character