Merge branch '74-tnc-improvements' into 'master'

README.md

docs/about.md

docs/contact.md

docs/faq.md

docs/guides/application-manager-guide.md

docs/guides/domain-admin-guide.md

docs/guides/user-guide.md

docs/img/favicon.ico

docs/img/nmaas-new.jpg

docs/img/nmaas_blue_gr.png

docs/img/nmaas_white.png

docs/img/nmaas_white_text.png

docs/index.md

docs/managed-nmaas/introduction.md

docs/managed-nmaas/nmaas-playground-instance.md

docs/nmaas-applications/application-list.md

docs/nmaas-applications/general-app-deployment.md

docs/nmaas-applications/new-application.md

docs/nmaas-applications/tutorials/booked.md

docs/nmaas-applications/tutorials/changedetectionio.md