Nokia today announced that its Ovi Store has reached 3 million downloads per day, a milestone spurred by overall global demand and a recent update that gives users of Nokia’s new Symbian smartphone family a friendlier look and feel as well as more popular apps and games. The company is gaining significant software developer momentum with more than 400,000 signing on to Nokia in the past 12 months, and 97 surpassing the million download milestone for their apps.   In related news, the Nokia Qt Software Development Toolkit (SDK) and the Qt SDK combined have been downloaded 1.5 million times as developers discover this approach can improve the speed and…