Twitter has overhauled its mobile apps for Android and iPhone, which the micro-blogging service said will "bring you closer to everything you care about." Up first, the apps will include Expanded Tweets, a service Twitter rolled out on Twitter.com last month that adds "interactive experiences" to tweets. If you come across a tweet with a link to a Kickstarter project, for example, you can watch the video associated with the project within the tweet. Links to...