MILWAUKEE — Donald Trump, somber and bandaged, accepted the GOP presidential nomination on Thursday at the Republican National Convention in a speech where he described how he felt during an assassination attempt that could have ended his life. “I’m not supposed to be here tonight,” Trump told the packed convention hall as thousands of people listened in silence. “There was blood pouring everywhere, yet, in a certain way I felt very safe because I had God on my side.” The 78-year-old former president, known best for his bombast and aggressive rhetoric, offered a softer and deeply personal mess…