feat(authentications): make GPA a DecimalField

this allows us to set the decimal places in the field instead of in a string format, eliminating confusion when some writes e.g. 4.500 in their profile but profile says 4.5 after save

tjdests/apps/authentication/migrations/0013_alter_user_gpa.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.2.12 on 2022-02-17 15:02
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('authentication', '0012_user_preferred_name'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='user',
+            name='GPA',
+            field=models.DecimalField(blank=True, decimal_places=3, help_text='Weighted GPA', max_digits=4, null=True),
+        ),
+    ]

tjdests/apps/authentication/models.py

@@ -8,7 +8,7 @@ class User(AbstractUser):
     accepted_terms = models.BooleanField(default=False)
     graduation_year = models.PositiveSmallIntegerField(null=True)
 
-    GPA = models.FloatField(null=True, blank=True, name="GPA", help_text="Weighted GPA")
+    GPA = models.DecimalField(null=True, blank=True, name="GPA", help_text="Weighted GPA", max_digits=4, decimal_places=3)
 
     is_senior = models.BooleanField(default=False)
     is_student = models.BooleanField(default=False)

tjdests/templates/destinations/student_list.html

@@ -49,7 +49,7 @@
                 {% for senior in object_list %}
                     <tr class="d-flex">
                         <td class="col-1">{{ senior }}</td>
-                        <td class="col-1">{{ senior.GPA|stringformat:".3f" }}</td>
+                        <td class="col-1">{{ senior.GPA }}</td>
                         <td class="col-3">
                             {# Test scores #}
                             <table class="table table-sm">