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/users_layout.pug

@@ -1,35 +1,17 @@
 //-
   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 head_layout
 
-block body_content
-  nav.navbar.navbar-inverse.navbar-fixed-top
-    .container-fluid
-      .navbar-header
-        button.navbar-toggle(type='button' data-toggle='collapse' data-target='#BarNav')
-          span.icon-bar
-          span.icon-bar
-          span.icon-bar
-        a.navbar-brand(href='https://key-networks.com' target='_blank')
-          img(src='/images/key-logo.svg' alt='Key Networks logo' height='25px' width='25px' style='display: inline')
-          |  Key Networks
-      .collapse.navbar-collapse(id='BarNav')
-        ul.nav.navbar-nav
-          li(class=(navigate.active === 'home'? 'active' : ''))
-            a(href='/controller') Home
-          li(class=(navigate.active === 'users'? 'active' : ''))
-            a(href='/users') Users
-          li(class=(navigate.active === 'create_user'? 'active' : ''))
-            a(href='/users/create') Create user
-        ul.nav.navbar-nav.navbar-right
-          li
-            a(href='/logout')
-              span.glyphicon.glyphicon-log-out
-              |  Logout
+block nav_items
+  +nav_item('controller_home', 'Home', '/controller')
+  +nav_item('users', 'Users', '/users')
+  +nav_item('networks', 'Networks', '/controller/networks')
+  +nav_item('create_user', 'Create user', '/users/create')
 
+block body_content
   .container(style='margin-top:50px')
     .row
       .col-sm-12