split EffectNode out of effecteval

Ignore-this: 38003ca0e42aca8aedff2709e5f44f2b

darcs-hash:20140530062001-836b1-bd9b4597d66f546841dde5d8cb5d1f78aab47d0d
effecteval faster loop, stats page

Ignore-this: d107f2e01d73fc6629249e5fec98cb85

darcs-hash:20140601100550-836b1-2a26af5d15967cc91f2ea0780ce4d793398f787b
effecteval has a delete button on effect rows

Ignore-this: 6a66737cd6857d2f7be4ec382e4890

darcs-hash:20140601102214-836b1-fdf8068e1fbd2bfdb91ce5460ed9defc0e6386cb
move sequentialUri to the graph lib

Ignore-this: 3dc3fb4833a23a46b8cfea90788f25be

darcs-hash:20140601103917-836b1-34d112198e0dc15f8423f4ff208618cf79761326
port curvecalc to gtk3. mostly worked, but there are severe bugs with redraws

Ignore-this: 2a9ba18d1c180831446257054e5d7e8a

darcs-hash:20140601203538-836b1-7b71bb75eee17507c83246bfe4e5d9dd01aac860