Fixed solved div1/2 hard sql query

Author: elkhawajah

scripts/sql/solved_div1_hard.sql

@@ -1,6 +1,7 @@
 SELECT coder_id as user_id, CURRENT as earned_date
 FROM coder_level
 WHERE level_id = 3
+AND problems_correct > 0
 AND division_id = 1
 AND algo_rating_type_id = 1
 GROUP BY coder_id

scripts/sql/solved_div2_hard.sql

@@ -1,6 +1,7 @@
 SELECT coder_id as user_id, CURRENT as earned_date
 FROM coder_level
 WHERE level_id = 3
+AND problems_correct > 0
 AND division_id = 2
 AND algo_rating_type_id = 1
 GROUP BY coder_id