Added a registration / results submission screen. 
closes #36
Added a registration / results submission screen. 
closes #36
Refactored adding packages.
Refactored adding packages.
Added an error screen. closes #37
Added a stimulus provider class. closes #22
Added a properties files that list the available stimulus and their categories. closes #21
Added a few example locales. #38
Increased the stimulus size on screen.
Tweaked the colour picker size on screen.
Removed the text from the selected colour panel.
Moved the no colour button away from the colour panel to make the UI clearer to use.
Added error handling for devices which do not support HTML5 Canvas. closes #39