Added coffee maker and reordered exercises

exercises/4-optimizing-queries/majors.py

@@ -0,0 +1,41 @@
+def majors():
+	return ['Biology',
+	'Chemistry',
+	'Mathematics',
+	'Political Science',
+	'Psychology',
+	'Social Sciences',
+	'Social Work',
+	'Sociology',
+	'Speech Pathology',
+	'Accounting',
+	'Finance' ,
+	'Management',
+	'Management Information Systems',
+	'Marketing',
+	'Family & Consumer Sciences',
+	'Child & Family Studies',
+	'Dietetics',
+	'Retail Merchandising',
+	'Art',
+	'Ceramics',
+	'Drawing',
+	'Graphic Design',
+	'Painting',
+	'Photography',
+	'Printmaking',
+	'Sculpture',
+	'New Media',
+	'Mass Communication',
+	'Music',
+	'Composition',
+	'Instrumental Performance',
+	'Organ Performance',
+	'Piano Pedagogy',
+	'Piano Performance',
+	'Vocal Performance',
+	'Theatre',
+	'Acting',
+	'Directing',
+	'Design and Technology',
+	'Musical Theater']