fix: misc issues

lms/patches/v2_0/add_course_statistics.py

@@ -1,6 +1,5 @@
 import frappe
 from lms.lms.api import update_course_statistics
 
-
 def execute():
 	update_course_statistics()

lms/patches/v2_0/give_discussions_permissions.py

@@ -0,0 +1,5 @@
+import frappe
+from lms.lms.api import give_dicussions_permission
+
+def execute():
+	give_dicussions_permission()