Revert "Replace master branch with page content via GitHub"

This reverts commit 14373b3b0d85ec953545c7e25ccaf1a310e49caf.
Revert "Revert "Replace master branch with page content via GitHub""

This reverts commit 5f98fed0cd7a4043b688d1fa17ea390e2f6e2a3d.
Revert "Replace master branch with page content via GitHub"

This reverts commit 14373b3b0d85ec953545c7e25ccaf1a310e49caf.