Upgrade Handlebars.js to v1.3.0
Update handlebars Grunt and build files for v2.0.0

	modified:   Gruntfile.js
	modified:   build.json
Add generated handlebars source files for v2.0.0

	modified:   js/handlebars-base.js
	modified:   js/handlebars-compiler-ast.js
	modified:   js/handlebars-compiler-base.js
	modified:   js/handlebars-compiler-compiler.js
	new file:   js/handlebars-compiler-helpers.js
	modified:   js/handlebars-compiler-javascript-compiler.js
	modified:   js/handlebars-compiler-parser.js
	modified:   js/handlebars-runtime.js
	modified:   js/handlebars-utils.js
	modified:   js/handlebars.js
	modified:   js/handlebars.runtime.js
Update handlebars unit test to reflect that handlebars now returns the string `false` instead of an empty string for the value of false.
Update Grunt file to import `createFrame` method into handlebars-runtime.
	modified:   Gruntfile.js
Update handlebars-compiler-parser so that it does not unnecessarily import a Helpers reference.
	modified:   js/handlebars-compiler-parser.js
Update handlebars-runtime.js.
Address issue in which slashes weren't being appropriately trimmed for pathogen encoded combos.

	modified:   js/loader-pathogen-combohandler.js
Use charAt instead of indexOf to find leading and trailing slashes in pathogen encoder.

	modified:   js/loader-pathogen-combohandler.js
Loader build files for pathogen slash trim fix.

	modified:   ../build/loader-pathogen-combohandler/loader-pathogen-combohandler-coverage.js
	modified:   ../build/loader-pathogen-combohandler/loader-pathogen-combohandler-debug.js
	modified:   ../build/loader-pathogen-combohandler/loader-pathogen-combohandler-min.js
	modified:   ../build/loader-pathogen-combohandler/loader-pathogen-combohandler.js
	modified:   ../build/loader-pathogen-encoder/loader-pathogen-encoder-debug.js
	modified:   ../build/loader-pathogen-encoder/loader-pathogen-encoder-min.js
	modified:   ../build/loader-pathogen-encoder/loader-pathogen-encoder.js
Merge branch 'handlebars-2' into dev-master
Build files for handlebars v2.0.0

	modified:   ../../build/handlebars-base/handlebars-base-debug.js
	modified:   ../../build/handlebars-base/handlebars-base-min.js
	modified:   ../../build/handlebars-base/handlebars-base.js
	modified:   ../../build/handlebars-compiler/handlebars-compiler-debug.js
	modified:   ../../build/handlebars-compiler/handlebars-compiler-min.js
	modified:   ../../build/handlebars-compiler/handlebars-compiler.js
Setup Y.config.global only if no user global was provided
Loader build files for only setting global if its not explicitly set.

	modified:   ../build/yui-base/yui-base-coverage.js
	modified:   ../build/yui-base/yui-base-debug.js
	modified:   ../build/yui-base/yui-base-min.js
	modified:   ../build/yui-base/yui-base.js
	modified:   ../build/yui-core/yui-core-coverage.js
	modified:   ../build/yui-core/yui-core-debug.js
	modified:   ../build/yui-core/yui-core-min.js
	modified:   ../build/yui-core/yui-core.js
	modified:   ../build/yui-nodejs/yui-nodejs-coverage.js
	modified:   ../build/yui-nodejs/yui-nodejs-debug.js
	modified:   ../build/yui-nodejs/yui-nodejs-min.js
	modified:   ../build/yui-nodejs/yui-nodejs.js
	modified:   ../build/yui/yui-coverage.js
	modified:   ../build/yui/yui-debug.js
	modified:   ../build/yui/yui-min.js
	modified:   ../build/yui/yui.js