The Guardian’s editor Katharine Viner has written to staff in the aftermath of Donald Trump’s “upsetting” US election victory offering free counselling for those unhappy with the outcome. Viner, 53, circulated an email to employees following Trump’s November 5 success in which she claimed readers would be turning to the newspaper for “hope”. She also praised Guardian journalists’ “brilliant” election coverage as the paper ran with headlines including “Fear triumphs over hope as Trump wins the presidency”. But she told staff how it has “exposed alarming fault lines on many fronts” – and pledged…