Finish adding 'Type' column to tables

See line comments for suggested discussion points for this commit. 
Add explanation of agent account

The wording of this may need to be discussed.
Explained phrase 'opaque account'

Also added some rationale to when this might be used. 
Reword first sentence of verb section

Removed a lot of words that aren't really needed. 
Added an extra sentence.
Changed paragraph spacing
merged two very similar paragraphs

Also replaced "Tin Can" with "Experience" for consistency (though I will personally continue to refer to the 'Tin Can API'). 
various minor amends
minor chnages to context and timestamp
Merge pull request #4 from garemoko/workingCopy

merge working copy to garemoko master