Feature: Add entry admin

This makes blog entries available for editing in the Django admin. Also, a button spacing fix.

blog/admin.py

 from django.contrib import admin
 
-# Register your models here.
+from .models import Entry
+
+
+@admin.register(Entry)
+class EntryAdmin(admin.ModelAdmin):
+    date_hierarchy = 'date_posted'
+    list_display = ('date_posted', 'title', 'draft')
+    list_display_links = ('title',)
+    list_filter = ('draft',)
+    search_fields = ('title', 'content')