Wells Fargo & Co. has been sued over allegations that it mishandled investments of a collateralized-debt obligation vehicle created by a German bank that was dissolved following the 2008 financial crisis, Bloomberg reports. A public agency created in Germany to wind up assets of the state-owned WestLB AG bank filed the suit this week in federal court in Manhattan. The suit accuses Wells Fargo (NYSE:WFC) of mismanagement as a trustee and collateral administrator, according to Bloomberg. San Francisco-based…