Revert "Remove welcome_files/"

This reverts commit 2ce2d49cee72db0db816443013c1dd0bd6a8b9ba.
Revert 7f0137d..401f206

This rolls back to commit 7f0137d9e8032e7f236181d111b71b44b43b20a4.
Merge master into refactor
Clean up blog styling
Refactor rest of CSS
Merge branch 'refactor'