Pseudolocalization

- rake pseudolocalize
- Added locale-setting around_filter to all routes
Locale switching works now
Merge pull request #78 from nanan9177/blockly_fix

Updated HoC and 20-hour instructions.
Merge pull request #77 from brandonbloom/i18n

I18n
Force locale to string in js_locale
Added paramterized Dialog box which is passed to client.
Always show x button.
Add class to video back drop to distinguish it from other backdrops.
Casing issue.
Removed max height from dialog body.
Removed max height from modal body.
Expllicitly set max height to none.
fix header for 19 levels, pass puzzle_number and stage_total, tweak instruction text
Fixed styling and syntax.
Merge pull request #71 from tobyk100/dialog

WIP. Added paramterized Dialog box which is passed to client.
Added level 2_7_5 for Artist.