* first pass at gs pt 1
* suggestions from Dawn
* unbreak tabs
* get started part 2 refresh
* comments from Dawn and Adrian
* draft of kube get started
* first draft of swarm demo for gs
* saving some updates...
* first draft docker hub section
* comments from Dawn
* comments from Dawn
* comments from Dawn
* comments from Dawn
* gsu frontmatter
* removed toc entry for get started part 6 and changed toc titles for the rest of get started topics
* addressing Adrian's feedback
* fixing top nav buttons