Omnilert Support

Also would like to bump the need to be able to assign articles to MULTIPLE user segments. It would make managing access much simpler than having to create a new "segment" for each filter.

We would also like to create a nice "Getting Started" section where we link to select articles that are in our more exhaustive help knowledgebase. 

For now, I plan to make an article full of links, but it would be nice to be able to make special links sections where the links all go to other pre-existing articles elsewhere in the HC. (Perhaps they wouldn't be indexed for search as such because the linked article is indexed instead?)