Add caption for diagram, presentation of Fredrik Wendt, remove Swedish

diagram of Boston Ruby group that is.
Some other small changes too.
Add interview reference
Add more interview references and make it clearer what my opinions are
Separate my thoughts from Edelstam's and add proposal for future work
Tool issues rephrasing
Clarify circumstances around errors in setup methods
Specify interview question number, give a new reason for why the non-headless browser was fast
Lots of fixes to avoid first person, etc.
Add reference to part 2 of Mark Bates tutorial on CoffeeScript testing
More interview references, clearer where opinions come from, various small fixes
Add and clarify references, remove unjustified claims
Simplifications and rephrasings
Add references to interview questions displaying a will to test the GUI
Appendix typo fix
Update PDF
Future work proposal about ensuring complete and proper stubbing
Last corrections for the Testability section
Footnote reference to PhantomCSS and problematise asynchronous tests with timeouts
Simplify and extend
DOM manipulation