TypeScript Removal - Individual Minification

Disabled bundling as .NET bundler's resultant JS merge file can be
incorrectly merged. Using Web Essentials (VS Extension) to produce
minified JS files automatically. (Web Essentials is already used for
LESS files.) Changed versioning stamp logic to use build date/time for
JS files. Changed loader to load individual files, full JS/CSS for
developers, minified JS/CSS for test and production environments.