Update snowplow version

Merge pull request #451 from datacamp/thomas/update-snowplow

chore(snowplow): update version

New Deploy system

Also promote Signal

DataCamp Promo Banner

release-25

Add closing script tag

Fix Snowplow tracking

Merge pull request #440 from datacamp/update-snowplow-tracking

Update Snowplow tracking

release-22

Merge pull request #438 from pollett/more-ram

4G mem

Numerous improvements

• Browse source files
• More advanced and relevant search
• Improved metrics for top downloaded packages
• "mini docs" on hover