Added partial implementation of PointF, SizeF, RectangleF
Google Closure tries to minify the string with: ""object"!==typeof contentManifest&&(contentManifest={});" which causes error that contentManifest is not defined. The better way to define global variable is to use window['contentManifest'].
related to #591: changed window to GlobalNamespace
Merge pull request #591 from desunit/master

Fix for Google Closure minification of contentManifest and additional implementation of PointF, SizeF, RectangleF