replace blank with empty to fix tests that were failing because it was a Rails method
replace blank with empty to fix tests that were failing because it was a Rails method

tarzan/onebox,tarzan/onebox,aceofspades/onebox,techAPJ/onebox,aceofspades/onebox,fantasticfears/onebox,discourse/onebox,discourse/onebox,tarzan/onebox,techAPJ/onebox,billy3321/onebox,riking/onebox,techAPJ/onebox,billy3321/onebox,billy3321/onebox,aceofspades/onebox