San Francisco Mayor London Breed has pulled the plug on a homeless center in the heart of the city as part of sweeping midyear cutbacks.  The move isn’t sitting well with homeless advocates and community organizations that have spent years planning the new center where the city’s homeless would be able to get food‚ a hot shower‚ connect to social services‚ and spend the night.  The city had pledged to fund the Tenderloin Urban Rest and Sleep Center‚ but Breed‚ citing...