Fix Regex check on subject input

src/app/degree-planner/course-search/course-search.component.ts

@@ -132,14 +132,16 @@ export class CourseSearchComponent implements OnInit, OnDestroy {
       'subject',
     ) as AbstractControl).valueChanges.subscribe(value => {
       // If the subject value is blank, or if the user is typing "all"
-      if (new RegExp('^([Aa]?[Ll]{0,2})$').test(value.trim())) {
+      if (/^(a[l]{0,2})?$/i.test(value.trim())) {
         this.filteredSubjects = this.subjects;
         return;
       }
 
       this.filteredSubjects = this.subjects.filter(subject => {
-        const search = subject.replace(/\s/g, '');
-        if (search.toLowerCase().indexOf(value.toLowerCase()) === 0) {
+        // Make both comparisons lowercase and remove all whitespace
+        const formattedSubject = subject.replace(/\s/g, '').toLowerCase();
+        const formattedValue = value.replace(/\s/g, '').toLowerCase();
+        if (formattedSubject.indexOf(formattedValue) === 0) {
           return true;
         }
         return false;