If you miss seeing Dan Stevens in “Downton Abbey,” here’s a chance to see him back in pre-WWI England again, here’s your chance, in “Summer in February,” based on the true story of painter A.J. Munnings (Dominic Cooper), known for his paintings of horses and his furious antipathy to modernist art.  The movie is the story of a tragic love triangle, co-starring Stevens and Emily Browning.  The gorgeous Cornwall scenery provides the setting.