changed collapse logic, changed how to manage auto column
changed collapse logic, changed how to manage auto column

ekfuhrmann/super-gigi,Objectway/ow-grid,Objectway/super-gigi,ekfuhrmann/super-gigi,Objectway/ow-grid,decore/super-gigi,decore/super-gigi,decore/super-gigi,Objectway/ow-grid,ekfuhrmann/super-gigi