Merge pull request #122 from nanan9177/blockly_fix

Send level specific feedback to blockly.
Added one level.
Merge pull request #123 from nanan9177/tutorial

Added one level.
Added messages for ie8, non supported and i18n.
Update README_Windows.md

Add final configuration steps. rake blockly:dev['blockly'] was critical
Update README_Windows.md
i18n'ed my strings.
Merge pull request #125 from tobyk100/master

Browser warnings.
Hotfix, got rid of silly require statement.
tweaks to recent activity UI
Get rid of browser gem, use user_agent
Merge branch 'master' of https://github.com/code-dot-org/dashboard
Merge pull request #124 from DigiTec/patch-1

Update README_Windows.md
Translations
[Finishes 59583904]: dashboard dialog support for keyboard
Tweak hover state for undone levels
Last level hover tweak
Check for no students assigned
Defer blockly scripts to bottom of body
Analytics partial