Add Humon.Summary as a standalone type
Rename sp_day to day.js.coffee. Clean up DaySummary and day.emblem (add upPressed and downPressed callbacks to the sleep and summary attributes). Remove extraneous #if and #with from humon_node.hbs
Add childrenREorderable and acceptsArbitraryChildren fields to Humon.Complex and Humon.List. HumonNodeView#enterPressed to check that the activeNode acceptsArbitraryChildren before sending commitAndContinue. Update Humon.DaySummary#init to set nodeVal._value