Squashed 'libertree-frontend-ramaze/' changes from 96c28e1..2fa3ae2

2fa3ae2 sequel and pg are no direct dependencies

git-subtree-dir: libertree-frontend-ramaze
git-subtree-split: 2fa3ae2829a233ed71d0f9e6b3c8873a9230cc29
Merge commit '4e9a32f9623e125fb73425facaf689f50a3aa5b6'
Squashed 'libertree-backend-rb/' changes from 700cede..b9bf4dc

b9bf4dc sequel and pg are no direct dependencies

git-subtree-dir: libertree-backend-rb
git-subtree-split: b9bf4dcf5f50b0c91fd646fd3b636e35c10b8444
Merge commit 'd304c983103fe4e2c85d2799929a7f6e6f5fb0c5'