feat(authentication): add last modified, redo admin interface

tjdests/apps/authentication/admin.py

@@ -5,6 +5,40 @@ from .models import User
 
 class UserAdmin(admin.ModelAdmin):
     search_fields = ["username", "first_name", "last_name"]
+    list_display = ["username", "last_name", "first_name", "last_modified"]
+    list_filter = ["is_senior", "accepted_terms", "is_student"]
+
+    fieldsets = (
+        (
+            None,
+            {
+                "fields": (
+                    "username",
+                    "first_name",
+                    "last_name",
+                    "email",
+                    "password",
+                    "accepted_terms",
+                    "is_staff",
+                    "is_superuser",
+                    "is_senior",
+                    "graduation_year",
+                    "is_student",
+                    "last_modified",
+                    "last_login",
+                )
+            },
+        ),
+        (
+            "Senior information",
+            {"fields": ("biography", "attending_decision", "publish_data")},
+        ),
+    )
+
+    readonly_fields = (
+        "last_modified",
+        "last_login",
+    )
 
 
 admin.site.register(User, UserAdmin)

tjdests/apps/authentication/migrations/0009_user_last_modified.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.2 on 2021-04-23 17:52
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("authentication", "0008_alter_user_biography"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="user",
+            name="last_modified",
+            field=models.DateTimeField(auto_now=True),
+        ),
+    ]

tjdests/apps/authentication/models.py

@@ -31,5 +31,7 @@ class User(AbstractUser):
         help_text="Can't see your college? Make sure you've added a decision with an admit status.",
     )
 
+    last_modified = models.DateTimeField(auto_now=True)
+
     def __str__(self):
         return f"{self.first_name} {self.last_name}"