Add 'making_a_survey' doc file with initial content (only, for now) for audio files
Merge pull request #200 from daguar/add-audio-file-overview-to-readme

Add 'making_a_survey' documentation with initial content for audio files
Initial writing questions doc
Tweak hierarchy in Markdown docs
Add space where missing in 9
Merge pull request #201 from daguar/writing-questions-documentation

Add documentation for writing questions
For Activity view, change repair/remove to agree/disagree (with test)
Replace all repair/remove with agree/disagree (tests passing)