Martha Stewart has slammed trolls for branding her mansion makeover “bland and boring”. The former ‘Martha Stewart Show’ host, 82, who has made a fortune as one of the US’ leading homemaking experts, was targeted by keyboard warriors after she shared several snaps online showing a quick change to the interior of her luxury Skylands estate in Maine. After she was bombarded with hate over her décor, she hit back on Instagram: “I rarely read all the comments that come in after I post but because I was so happy at the transformation of my Maine living room I did go through many of the comments and…