Added blank lines between selectors for alerts
Added blank lines between selectors for alerts

BS3 commits: 02921b4d75aaefca9da1d0e55a581b50019774d5

mozillo/todc-bootstrap,2947721120/todc-bootstrap,ztx1491/todc-bootstrap,2947721120/googlebt4,aaroncnhk/todc-bootstrap,todc/todc-bootstrap,todc/todc-bootstrap,up2vs/todc-bootstrap,todc/todc-bootstrap