Fix #284 -- display SplashInfo statistics on dashboard

Since the lunch choices can be overridden by tags, this dynamically
generates entries on the dashboard according to which values have been
selected.
Fix typo in 057a2bc71c
Tweak string formatting to work in Python 2.6
Merge pull request #517 from learning-unlimited/lua-splashinfo-statistics

Fix #284 -- display SplashInfo statistics on dashboard