Add support for embedded CSV files
Typo on about dialog
Add bootstrap-tour
Update Changelog
Add a tour for the features of Vennt
Document the use of the 'vennt.py' script
Add error checking of CSV column names & numeric columns

- Improve navbar links
Merge branch 'master' into release

Conflicts:
	Changelog.txt
	README.md
	app/templates/body.hbs