split src/ to templates/ and scripts/

https://github.com/repo-utils/badgeboard/commit/d94465d4f43fd3a71395f43fb568b99a4e488fd6#commitcomment-7451995
make columns smaller

"lead maintainer" -> "maintainer", "project name" -> "project"

https://github.com/repo-utils/badgeboard/commit/0f00e9ac59f33945a33c949ab58c1c81831e7bcd#commitcomment-7452003