diff-review dialog was/now traffic-lights in place
added new diff-review dialog files
diff-review dialog navigation << < > >> handlers in place
diff-review dialog filenames now visible
diff-review dialog file-diffs now appearing
diff-review dialog line-count buttons basic functioning
diff-review dialog - removed unused javascript
diff-review dialog diff-content scroll/width/height now set
diff-review dialog set diff_content width and height in CSS so dialog appears centered
diff-review dialog - small tidy up
merged two diff css files into one
removed large comment used only during refactoring
diff-review dialog now opens from main practice page's traffic lights
diff-review dialog now opens from dashboard page's traffic lights
diff-review dialog now opens to animals current code when the animals image is clicked on dashboard
fixed tool-tip on dashboard animals; set cursor to hand-pointer for diff-traffic-lights and diff-animal-image
removed dead code
s/cancel/close/ on diff-dialog
refactored traffic-light-helper (used in front page tips dialog)
put animal image between << < > >> navigation buttons on revert-dialog so it looks the same as on the diff-dialog