Fixed formatting of Array.js.
Fixed formatting of CanvasRenderingContext2D.js.
Fixed formatting of Color.js.
Fixed formatting of Date.js.
Fixed formatting of DOM.js.
Slightly improved extensions.js code.
Fixed formatting of MouseEvent.js.
Fixed formatting of Number.js.
Fixed formatting of Object.js.
Fixed formatting of String.js.
Fixed missing semicolon in DummyCache.js.
Fixed formatting of TreeVis.js.