(Reuters) - European shares inched higher on Friday as comments from U.S. President Donald Trump that trade talks with China were "moving right along" helped inject some calm into the markets after a rocky week.The pan-European STOXX 600 index rose 0.3% by 0819 GMT, with banks, technology firms and retail companies leading the gains.M&A activity boosted insurers after Phoenix Group Holdings Plc said it would buy the British insurance unit of Swiss Re in a cash-and-shares deal worth 3.2..