reorganizing around event type
reorganizing around event type

This is just reordering to consolidate sections around the event type;
I haven’t made any other changes to the text in this commit. I was
recently reviewing this and it was hard to get a sense of what each
event and what they involved in the current format. Planning to add
some content later…

Chuck8080/opendata,portofsandiego/project-open-data.github.io,pjdufour/project-open-data.github.io,pjdufour/project-open-data.github.io,Chuck8080/opendata,judecalvillo/project-open-data.github.io,portofsandiego/project-open-data.github.io,judecalvillo/project-open-data.github.io,pjdufour/project-open-data.github.io,pjdufour/project-open-data.github.io,portofsandiego/project-open-data.github.io,portofsandiego/project-open-data.github.io