Fix cutprogress and job worker filter sql

cutprogress.py

@@ -40,8 +40,8 @@ def cutprogress(user=None):
 				lectures.course_id,
 				lectures.time,
 				lectures.title,
-				video_counts.videos_total,
-				video_counts.videos_visible
+				COALESCE(video_counts.videos_total, 0),
+				COALESCE(video_counts.videos_visible, 0)
 			FROM lectures
 			JOIN courses ON ( courses.id = lectures.course_id )
 			LEFT JOIN (

jobs.py

@@ -27,7 +27,7 @@ def jobs_overview():
 
 	condition_values = []
 	if filter['worker'] == '%':
-		condition = 'WHERE (type like ?) AND (worker IS NULL) AND (state like ?)'
+		condition = 'WHERE (type like ?) AND (state like ?)'
 		condition_values.extend([filter['type'], filter['state']])
 	else:
 		condition = 'WHERE (type like ?) AND (worker like ?) AND (state like ?)'