Updated the admin interface

Mostly updated the admin interface, also some small other items.

- Added more diagnostic information to (hopefully) decrease issue
  reporting, or at least solve them quicker.
- Added an option to generate a support string which can be used to
  copy/paste on the forum or during the creation of an issue. It will
try to hide the sensitive information automatically.
- Changed the `Created At` and `Last Active` info to be in a column and
  able to sort them in the users overview.
- Some small layout changes.
- Updated javascript and css files to the latest versions available.
- Decreased the png file sizes using `oxipng`
- Updated target='_blank' links to have rel='noreferrer' to prevent
  javascript window.opener modifications.

src/static/scripts/bootstrap.css

@@ -1,10 +1,10 @@
 /*!
- * Bootstrap v4.5.2 (https://getbootstrap.com/)
+ * Bootstrap v4.5.3 (https://getbootstrap.com/)
  * Copyright 2011-2020 The Bootstrap Authors
  * Copyright 2011-2020 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
  */
- :root {
+:root {
   --blue: #007bff;
   --indigo: #6610f2;
   --purple: #6f42c1;
@@ -216,6 +216,7 @@ caption {
 
 th {
   text-align: inherit;
+  text-align: -webkit-match-parent;
 }
 
 label {
@@ -3750,6 +3751,8 @@ input[type="button"].btn-block {
   display: block;
   min-height: 1.5rem;
   padding-left: 1.5rem;
+  -webkit-print-color-adjust: exact;
+  color-adjust: exact;
 }
 
 .custom-control-inline {
@@ -5289,6 +5292,7 @@ a.badge-dark:focus, a.badge-dark.focus {
   position: absolute;
   top: 0;
   right: 0;
+  z-index: 2;
   padding: 0.75rem 1.25rem;
   color: inherit;
 }
@@ -10163,7 +10167,7 @@ a.text-dark:hover, a.text-dark:focus {
 
 .text-break {
   word-break: break-word !important;
-  overflow-wrap: break-word !important;
+  word-wrap: break-word !important;
 }
 
 .text-reset {
@@ -10256,3 +10260,4 @@ a.text-dark:hover, a.text-dark:focus {
     border-color: #dee2e6;
   }
 }
+/*# sourceMappingURL=bootstrap.css.map */