[activecollab 48] Prevent Epidemiologist milestone 3 from telling user they have both passed and not passed.

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Changed login interact again, instructions for new users and existing user login page. New user registration opens in a lightwindow

[ActiveCollab 34] Changing the epidemiologist-hypothesis "quiz" to fit the best available information. (part 2)

Edited this page so videos would fit.
Changed video layout to work with light window.
Added the "getting started video" link next to the continue button to be easily seen
Changed the size of the getting started video to 720x576

Edited this page so videos would fit.

[ActiveCollab 34] Changing the epidemiologist-hypothesis "quiz" to fit the best available information.

[ActiveCollab 39] Changed results pages to display "Passed" or "Not Passed" instead of an actual percentage.