use minimum pass result instead of 100 in progress so it works for freeplay levels
Restore a few ani gifs
add some mouseover tooltips for progress view
Merge branch 'finished' of github.com:code-dot-org/dashboard into finished
Refactoring custom level import/export from json to xml format
Refactoring xml level format based on comments
Replaced Builder::XmlMarkup with Nokogiri::XML::Builder
Migrate all level data to new XML format