Adding helpful output to 'cake pages' command
Improves formatting of test app HTML code
Test app now shows comments in test histories

Example test history now contains a demo comment, but this will be
changed as I add editing features for comments.
Adds comment editing support to test app
Updates test app documentation

(including mention of the test app in the progress page)
Bug fix: Replaying test history now adds comments
Adds comments and pretty printing to JSON downloads
Update example test history w/pretty printing and comments