Merge pull request github#304 from github/advanced-summaries

Advanced summaries

Merge pull request github#294 from github/fix-warnings

Fix warnings, resolve missing layouts, remove deprecated content

Merge pull request github#288 from github/styling-refresh

Update style, tidy custom components

Merge pull request github#286 from randomecho/intermed-reading-flow

Remove one AND from Details intro to stop a run-on sentence.

Merge pull request github#244 from github/js-fine-tuning

JavaScript tune up, logic improvements

Release script tests for build success

Merge pull request github#100 from github/found-int-workbook-tuning

Foundations, Intermediate Workbook content tuning

Merge pull request github#98 from github/cheat-sheet-ja

Add JA Translation of Git Cheat Sheet

Update grammer and small text formatting

Update PDF to latest content release