Enabled trust-dns and some updates.

- Enabled trust-dns feature which seems to help a bit when DNS is
causing long timeouts. Though in the blocking version it is less visible
then on the async branch.
- Updated crates
- Removed some redundant code
- Updated javascript/css libraries

Resolves #2118
Resolves #2119

src/static/scripts/datatables.css

@@ -4,10 +4,10 @@
  *
  * To rebuild or modify this file with the latest versions of the included
  * software please visit:
- *   https://datatables.net/download/#bs5/dt-1.11.2
+ *   https://datatables.net/download/#bs5/dt-1.11.3
  *
  * Included libraries:
- *   DataTables 1.11.2
+ *   DataTables 1.11.3
  */
 
 @charset "UTF-8";