animal image at end of traffic-lights on [test] page now has custom tool-tip
refactored duplicate code
moved tip-window into shared partial
dashboard traffic-lights now use custom tool-tip to match traffic-lights on [test] page
dashboard traffic-light counts now use custom tool-tip to match counts on [test] page
minor tidy up
refactoring
refactoring
refactoring
front page big buttons now use custom tool-tips
removed unneeded old tooltip javascript; added tooltip for front page id-entry field
dashboard now centered
refactoring
restored accidentally deleted id of age div in dashboard (updated by heartbeat)
s/row/table-row on dashboard css so as not to clash with row used on front page
refactoring
removed old comment