Name of prof/ta/students and course code should not be case sensitive

[elaineshijie]

As it is highly likely for users to forget what case they use to input data into the app, case sensitive names that allow users to add people with the same name and details into the app will cause duplicates and will be highly inconvenient for the user. This contradicts the app's selling point "With this application, students can save time and energy that would otherwise be spent searching for scattered and hard-to-access essential academic contacts."

[nus-pe-script]

Your response not required for this bug as the team has accepted the bug as it is.