shadow should be above fill

Makes it much easier to select lines that are within areas.
Don't force point to area boundary (fixes #614)
Use default shape-rendering

On Firefox, optimizeSpeed = aliased. Fixes #592.
Fix #623, get enitity from current graph
updated source svg.
Merge branch 'master' of github.com:systemed/iD
Contributing
JShint fixups
Merge pull request #612 from porjo/master

Added orthogonalize function
Adjust for style, formatting, and jshint
Fix directory
Namespace selectors to iD-owned elements
Merge branch 'master' of github.com:systemed/iD
Purge a few more uses of d3.select, refs #595
Fix dragging cursor off of edge while drawing
Add notes on reporting issues
fix intro modal position.
Merge branch 'master' of github.com:systemed/iD
Merge branch 'master' of github.com:systemed/iD
Eliminate flickering