Spanish Economy Minister Nadia Calviño refused to be in a group photo at a managers’ forum because she would have been the only woman in the picture, an act that has won her praise and condemnation. The 53-year-old was celebrated on social media by activists and by colleagues in the left-leaning government – but she was sharply criticized by top business leaders. “This is just posturing,” Antonio Garamendi, president of Spain’s CEOE business confederation, told reporters in Madrid on Wednesday. With her refusal, Calviño made good on a promise she made in February at the Madrid Leaders Forum on…