ZURICH (Reuters) – Credit Suisse shareholders on Friday rejected by a wide margin the board’s proposal to provide the beleaguered Swiss bank’s management a discharge from liabilities for the 2020 financial year, as investor ire over a slew of costly missteps grows. The board’s proposal to provide managers a legal discharge for 2020 — a sign of backing, which also waives some of the directors’ liabilities for the period — garnered only 35.88% support at the bank’s annual general meeting, even after the board had excluded the collapse of the bank’s Greensill-linked supply chain finance funds f…