Google has announced a new iPad-optimized version of its Gmail for Mobile HTML5 web app. Launched last year for the iPhone and Android platform, the GMail for mobile web app provides an optimized browsing experience on the iPhone and iPod touch and uses HTML5 to provide a native app-like experience in the web browser. For the iPad browser, Google has created a two-pane view to take advantage of the larger screen. In the new iPad web app, the list…