Improve WebCLProxy log
2013-04-24  Alexandre Rocha  <a.rocha@samsung.com>

        Created a wrapper to console API to add some
        capabilities as change log level in runtime.

        Improved WebCLProxy log with time and group
        functions and reviewed some log messages.

        Reviewed by acosta

        * webcl/resources/logger.js: Added.
        * webcl/resources/webcl-proxy.js: