Fixed stat queries

stats.py

@@ -9,13 +9,13 @@ def stats():
 	return render_template('stats.html')
 
 statsqueries = {}
-statsqueries['formats_views'] = "SELECT formats.description AS x, count(log.id) AS y FROM log JOIN videos ON (videos.id = log.obj_id) JOIN formats ON (formats.id = videos.video_format) GROUP BY formats.id"
+statsqueries['formats_views'] = "SELECT formats.description AS x, count(DISTINCT log.id) AS y FROM log JOIN videos ON (videos.id = log.obj_id) JOIN formats ON (formats.id = videos.video_format) GROUP BY formats.id"
 statsqueries['course_count'] = "SELECT semester AS x, count(id) AS y FROM courses GROUP BY semester"
 statsqueries['lectures_count'] = "SELECT semester AS x, count(lectures.id) AS y FROM lectures JOIN courses ON (courses.id = lectures.course_id) GROUP BY semester"
 statsqueries['categories_courses'] = "SELECT courses.subject AS x, count(courses.id) AS y FROM courses GROUP BY courses.subject ORDER BY y DESC LIMIT 100"
 statsqueries['organizer_courses'] = "SELECT courses.organizer AS x, count(courses.id) AS y FROM courses GROUP BY courses.organizer ORDER BY y DESC LIMIT 100"
-statsqueries['categories_lectures'] = "SELECT courses.subject AS x, count(lectures.id) AS y FROM lectures JOIN courses ON (courses.id = lectures.course_id) GROUP BY courses.subject ORDER BY y DESC LIMIT 100"
-statsqueries['lecture_views'] = "SELECT lectures.time AS x, count(log.id) AS y FROM log JOIN videos ON (videos.id = log.obj_id) JOIN lectures ON (lectures.id = videos.lecture_id) WHERE (lectures.course_id = ?) GROUP BY lectures.id ORDER BY lectures.time"
+statsqueries['categories_lectures'] = "SELECT courses.subject AS x, count(lectures.id) AS y FROM lectures JOIN courses ON (courses.id = lectures.course_id) WHERE lectures.visible GROUP BY courses.subject ORDER BY y DESC LIMIT 100"
+statsqueries['lecture_views'] = "SELECT lectures.time AS x, count(DISTINCT log.id) AS y FROM log JOIN videos ON (videos.id = log.obj_id) JOIN lectures ON (lectures.id = videos.lecture_id) WHERE (lectures.course_id = ?) GROUP BY lectures.id ORDER BY lectures.time"
 
 def plotly_date_handler(obj):
 	return obj.strftime("%Y-%m-%d %H:%M:%S")