Some changes, including DNS support (#57)

* remove CDN

* Add a link to "members" in the network detail page

* Show object values as JSON

* remove TLS options

* Minor style improvements

* Show object values as JSON (member_detail)

* Add missing 'const'

* Navbar height fix

* Merge jQuery ready functions

* Change brand

* Merge network pages (name, members, detail) into single page and...

* Show ZT version on controller index page
* Show count of members
* Use <code> tag to display JSON data
* Fix error in some "error" pages caused by missing "navigate" when
  rendering nav items, use pug mixin to render nav items.
* Adjust column widths of network list

* Refactor: move duplicated nav code to `head_layout`

* Remove some debug logging code

* Get network members detail parallelly

* Add missing frontend script for members

* Revert "Change brand"

* Remove "members" and "name" pages which are merged into "detail"

* Add DNS support

* Trivial changes (table width etc.)

* Don't try to read TLS cert files when not using HTTPS

* Validate DNS IP

* Downgrade jquery to 3.4.1 to fix nav bar collapse

* Revert "Navbar height fix"

This reverts commit 8edaa9aa81, which
break the nav item height on mobile.

* Add missing margin for some buttons

* Display current DNS configuration above inputs

* Change network rename UI/UX

* Includes 'jquery.min.js' in pkg

* Improve JSON value rendering

* Get peer status of network members

* Display members with peer status

* Show controller itself as "CONTROLLER"

* Display peer address

* Improve login redirection

* pr57: Doc updates; version bump

* pr57: Year update

Co-authored-by: Key Networks <34238649+key-networks@users.noreply.github.com>

src/views/index.pug

@@ -1,6 +1,6 @@
 //-
   ztncui - ZeroTier network controller UI
-  Copyright (C) 2017-2018  Key Networks (https://key-networks.com)
+  Copyright (C) 2017-2021  Key Networks (https://key-networks.com)
   Licensed under GPLv3 - see LICENSE for details.
 
 extends controller_layout
@@ -10,14 +10,13 @@ block content
 
   h2
     a(href='https://zerotier.com' target='_blank') ZeroTier 
-    | network controller UI
-
-  h3 Network controller details
+    | network controller UI by 
+    a(href='https://key-networks.com' target='_blank') Key Networks
 
   if error
      b #{error}
   else
-    h4 This network controller has a ZeroTier address of <b>#{zt_address}</b>
-
+    h4 This network controller has a ZeroTier address of <b>#{zt_status.address}</b>
+    h4 ZeroTier version <b>#{zt_status.version}</b>
     h4
       a(href='/controller/networks') List all networks on this network controller