Update designprinciples.html.erb

Fixed capitalization typo for GitHub.
Merge pull request #180 from pmackay/master

Update designprinciples.html.erb
Explained DPI acronym

Also changed below picture to picture below (either way, there are accessibility issues using 'below', but it reads better).
Service manual updates #version-104

https://github.com/alphagov/government-service-design-manual/compare/version-103...version-104
New groups section

The Groups section replaces the Policy advisory groups content type. This section needs to be put alphabetically between Detailed guides and Government responses. Please check all the internal and external links. Thanks. These changes have been signed off by Simon Kaplan.
Revert "New groups section"

This reverts commit 1e784da8ca896d0b201d4a32327d4741d47929c6, which
broke the build. I'll speak to @BenClancy to understand what that
change should do.
Service manual updates #version-105

https://github.com/alphagov/government-service-design-manual/compare/version-104...version-105

Build using the old compile.sh script since sinatra version isn’t in
production yet.
Service manual updates #version-106

https://github.com/alphagov/government-service-design-manual/compare/version-105...version-106

Build using the old compile.sh script since sinatra version isn’t in
production yet.