By Will Dunham (Reuters) – Glynis Johns, the husky-voiced British actress most widely known for her role as a suffragette who reconnects with her children thanks to a magical nanny in the blockbuster 1964 movie musical “Mary Poppins,” has died at the age of 100. Johns, a versatile film and stage veteran who won a Tony Award in 1973 for her role in the Stephen Sondheim musical “A Little Night Music” and was nominated for an Oscar for the 1960 film “The Sundowners,” died of natural causes at an assisted living facility in the Los Angeles area, said her manager, Mitch Clem. She appeared in dozens…