Merge pull request #6 from Nurhashimah/master

Fixes on course title, notification, timetable management, lesson plan reporting and addition on Instructor Appraisal-Average score analysis
timetables_controller-cleanup
Instructor Appraisal|NEW Instructor-INDEX page fixed
Fixed - lecturer appraisal(different student) & fixes for Data Analysis and Average Score of Lecturers ie INDEX, ADD, EDIT, SHOW & PRINT pg
Additional fixes-menu items & INDEX page for Lecturer Appraisal
Lecturer Appraisal-filter subject for selection according to selected course