Improvements to helpers and host file.
Added checklist files to Makefile
Improvements to admin, instructors and lead instructor checklists
Major surgery -- removed checklists and redundant passages.
Added a few passages which I removed from the Operations page.
First block of changes to Operations Guide
Copyedits and initial rearranging of Operations Guide. Still need to fill in the rest of the story and put things in order.
Moved "select attendees" to checklist (not OG)
Rearranged content into chronological order -- still need to create missing content
Added some placeholders (and content) for the missing structure -- made headers consistent. Rearranged a couple of sections. Put Pitfalls in comments (going to move them to the respective checklists.)
Merging changes to checklists and operations guide from @amyrbrown