undid inadvertently saved changes to turtle for chapter
added %= include 'contributors' to turtle for orgs and subsequently commented it out
removed scratch note at bottom of turtle for activities
made doi/URL conditional of the other in the turtle for report
corrected error in aforementioned conditionality with report doi/url; moved doi/url further up in turtle
added space between headings and subject in turtle for array
fixed minor spacing issue (extra space) in turtle for book
Merge pull request #10 from justgo129/master

Very minor changes, incl. removal of commented out line used for scratchwork within the turtle for activities