Minor cosmetic changes + avoid warning PHP message

plugin/dashboard/block_session/block_session.class.php

@@ -155,5 +155,4 @@ class BlockSession extends Block {
 		return count($this->sessions);
 	}
 
-}
+}
-?>

plugin/dashboard/block_student/block_student.class.php

@@ -212,12 +212,12 @@ class BlockStudent extends Block {
 	 				$course_code = $course['code'];
 	 				$cats = Category::load(null, null, $course_code, null, null, null, false);
 	 				$scoretotal = array();
-	 				if (isset($cats)) {		 				
+	 				if (isset($cats) && isset($cats[0])) {		 				
 		 				$scoretotal= $cats[0]->calc_score($student_id, $course_code);		 				
 	 				} 
 
 	 				if (!empty($scoretotal)) {
-	 					$score += $scoretotal[0];
+	 					$score  += $scoretotal[0];
 	 					$weight += $scoretotal[1];	
 	 				} 
 	 			}
@@ -256,8 +256,5 @@ class BlockStudent extends Block {
 	 */
 	function get_number_of_students() {
 		return count($this->students);
-	}
+	}    
-    
+}
-}
-
-?>

plugin/dashboard/block_student_graph/block_student_graph.class.php

@@ -210,5 +210,4 @@ class BlockStudentGraph extends Block {
 	function get_number_of_students() {
 		return count($this->students);
 	}    
-}
+}
-?>

plugin/dashboard/block_teacher/block_teacher.class.php

@@ -215,6 +215,4 @@ class BlockTeacher extends Block {
 		return count($this->teachers);
 	}
     
-}
+}
-
-?>

plugin/dashboard/block_teacher_graph/block_teacher_graph.class.php

@@ -197,6 +197,4 @@ class BlockTeacherGraph extends Block {
 		return count($this->teachers);
 	}
     
-}
+}
-
-?>