Added click event to combination matrix cells.
Added click event to combination matrix cells.

VCG/upset,XDATA-Year-3/UpSet,syrenio/powerset,syrenio/upset,syrenio/powerset,zhanghuijun-hello/test,zhanghuijun-hello/test,XDATA-Year-3/UpSet,VCG/upset,VCG/upset,syrenio/powerset,zhanghuijun-hello/test,XDATA-Year-3/UpSet,VCG/upset,XDATA-Year-3/UpSet,zhanghuijun-hello/test,XDATA-Year-3/UpSet,syrenio/powerset,syrenio/upset,syrenio/upset,syrenio/upset