Favicon, SMTP and misc updates

Favicon:
- Replaced HTML tokenizer, much faster now.
- Caching the domain blacklist function.
- Almost all functions are async now.
- Fixed bug on minimizing data to parse
- Changed maximum icon download size to 5MB to match Bitwarden
- Added `apple-touch-icon.png` as a second fallback besides `favicon.ico`

SMTP:
- Deprecated SMTP_SSL and SMTP_EXPLICIT_TLS, replaced with SMTP_SECURITY

Misc:
- Fixed issue when `resolv.conf` contains errors and trust-dns panics (Fixes #2283)
- Updated Javscript and CSS files for admin interface
- Fixed an issue with the /admin interface which did not cleared the login cookie correctly
- Prevent websocket notifications during org import, this caused a lot of traffic, and slowed down the import.
  This is also the same as Bitwarden which does not trigger this refresh via websockets.

Rust:
- Updated to use v1.59
- Use the new `strip` option and enabled to strip `debuginfo`
- Enabled `lto` with `thin`
- Removed the strip RUN from the alpine armv7, this is now done automatically

src/static/scripts/datatables.css

@@ -4,22 +4,13 @@
  *
  * To rebuild or modify this file with the latest versions of the included
  * software please visit:
- *   https://datatables.net/download/#bs5/dt-1.11.3
+ *   https://datatables.net/download/#bs5/dt-1.11.4
  *
  * Included libraries:
- *   DataTables 1.11.3
+ *   DataTables 1.11.4
  */
 
 @charset "UTF-8";
-td.dt-control {
-  background: url("https://www.datatables.net/examples/resources/details_open.png") no-repeat center center;
-  cursor: pointer;
-}
-
-tr.dt-hasChild td.dt-control {
-  background: url("https://www.datatables.net/examples/resources/details_close.png") no-repeat center center;
-}
-
 table.dataTable th.dt-left,
 table.dataTable td.dt-left {
   text-align: left;
@@ -91,6 +82,31 @@ table.dataTable tbody th.dt-body-nowrap,
 table.dataTable tbody td.dt-body-nowrap {
   white-space: nowrap;
 }
+table.dataTable td.dt-control {
+  text-align: center;
+  cursor: pointer;
+}
+table.dataTable td.dt-control:before {
+  height: 1em;
+  width: 1em;
+  margin-top: -9px;
+  display: inline-block;
+  color: white;
+  border: 0.15em solid white;
+  border-radius: 1em;
+  box-shadow: 0 0 0.2em #444;
+  box-sizing: content-box;
+  text-align: center;
+  text-indent: 0 !important;
+  font-family: "Courier New", Courier, monospace;
+  line-height: 1em;
+  content: "+";
+  background-color: #31b131;
+}
+table.dataTable tr.dt-hasChild td.dt-control:before {
+  content: "-";
+  background-color: #d33333;
+}
 
 /*! Bootstrap 5 integration for DataTables
  *