teams: Fix errors during initial load.
spec/helpers: Add beInstanceOf() matcher.
css: Fix empty white bar at bottom of large screens.
views/ranking: Fix table header for rounds.
services/ng-stages: Fix $stages.get(), remove redundant _update() call.
all: createFsMock now supports multiple files.
scores: Implement automatic scoreboard/ranking computation, including validation.
main: Add proof-of-concept validation error badge to Scores page tab.