Adds 404 and 500 pages

they only show up when debug is off though, thankfully
Fixes #112

fedireads/templates/error.html

@@ -0,0 +1,10 @@
+{% extends 'layout.html' %}
+{% block content %}
+
+<div class="content-container">
+    <h2>Server Error</h2>
+    <p>Something went wrong! Sorry about that.</p>
+</div>
+
+{% endblock %}
+

fedireads/templates/notfound.html

@@ -0,0 +1,9 @@
+{% extends 'layout.html' %}
+{% block content %}
+
+<div class="content-container">
+    <h2>Not Found</h2>
+    <p>The page your requested doesn't seem to exist!</p>
+</div>
+
+{% endblock %}

fedireads/urls.py

@@ -13,6 +13,8 @@ local_user_path = r'^user/%s' % localname_regex
 status_path = r'%s/(status|review|comment)/(?P<status_id>\d+)' % local_user_path
 book_path = r'^book/(?P<book_identifier>[\w\-]+)'
 
+handler404 = 'fedireads.views.not_found_page'
+handler500 = 'fedireads.views.server_error_page'
 urlpatterns = [
     path('admin/', admin.site.urls),
 

fedireads/views.py

@@ -25,6 +25,16 @@ def is_api_request(request):
             request.path[-5:] == '.json'
 
 
+def server_error_page(request):
+    ''' 500 errors '''
+    return TemplateResponse(request, 'error.html')
+
+
+def not_found_page(request, _):
+    ''' 404s '''
+    return TemplateResponse(request, 'notfound.html')
+
+
 @login_required
 def home(request):
     ''' this is the same as the feed on the home tab '''