Organizations list - help blurb, titles/text changed

Kanban tickets:
https://aptivate.kanbantool.com/boards/5986-econsensus#tasks-1616855 (help blurb)
https://aptivate.kanbantool.com/boards/5986-econsensus#tasks-1616931 (title change)

I also changed the link to 'create new organization' from 'add organization' along with the title of the new organization page.