Switch from using the admin login/logout pages to custom 'lemonauth' pages

lemonauth/static/lemonauth/css/login.styl

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+.container
+	display flex
+	flex-direction column
+	justify-content center

lemonauth/templates/lemonauth/login.html

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+{% extends 'lemoncurry/layout.html' %}
+{% load lemonauth_tags static %}
+{% block title %}log in ~ {{ block.super }}{% endblock %}
+
+{% block styles %}
+<link rel="stylesheet" type="text/stylus" href="{% static 'lemonauth/css/login.styl' %}" />
+{% endblock %}
+
+{% block main %}
+<div class="container">
+	{% if form.errors %}
+	<p class="alert alert-danger">
+		<strong>Uh oh!</strong> Your username and password didn't match. Please try again.
+	</p>
+	{% endif %}
+
+	{% if next %}
+	{% if user.is_authenticated %}
+	<p class="alert alert-warning">
+		<strong>Hang on!</strong> Your account doesn't have access to this page. To proceed, please log in to an account that does have access.
+	</p>
+	{% else %}
+	<p class="alert alert-warning">
+		<strong>Oops!</strong> Please log in to see this page.
+	</p>
+	{% endif %}
+	{% endif %}
+
+	<form class="card" method="post" action="{% url 'lemonauth:login' %}">
+		<div class="card-body">
+			{% form_field form.username %}
+			{% form_field form.password %}
+		</div>
+
+		<div class="card-footer">
+			<button class="btn btn-primary" type="submit">
+				<i class="fa fa-sign-in"></i>
+				log in
+			</button>
+		</div>
+
+		{% csrf_token %}
+		<input type="hidden" name="next" value="{{ next }}" />
+	</form>
+</div>
+{% endblock %}

lemonauth/templates/lemonauth/tags/form_field.html

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+<div class="form-group{% if field.errors %} has-error{% endif %}">
+	<label for="{{ field.id_for_label }}">{{ field.label | lower }}</label>
+	<input id="{{ field.id_for_label }}" class="form-control" type="{{ field.field.widget.input_type }}"
+				 name="{{ field.html_name }}"{% if field.value %} value="{{ field.value }}"{% endif %}{% if field.help_text %} aria-describedby="{{ field.id_for_label }}-help"{% endif %} />
+	{% if field.help_text %}<p id="{{ field.id_for_label }}-help" class="form-text">{{ field.help_text }}</p>{% endif %}
+</div>

lemonauth/templatetags/lemonauth_tags.py

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+from django import template
+
+register = template.Library()
+
+
+@register.inclusion_tag('lemonauth/tags/form_field.html')
+def form_field(field):
+    return {'field': field}

lemonauth/urls.py

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+from django.conf.urls import url
+from . import views
+
+app_name = 'lemonauth'
+urlpatterns = [
+    url('^login$', views.login, name='login'),
+    url('^logout$', views.logout, name='logout'),
+]

lemonauth/views.py

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+from django.contrib.auth import views as auth_views
+
+login = auth_views.LoginView.as_view(
+    template_name='lemonauth/login.html',
+    redirect_authenticated_user=True,
+)
+logout = auth_views.LogoutView.as_view()