Removed font-awesome full submodule clone. Use the CDN-provided all.css file instead.

It won't work if the webapp runs on a device not connected to the internet,
but it saves a lot of installation space.

.gitmodules

@@ -1,6 +1,3 @@
-[submodule "platypush/backend/http/static/font-awesome"]
-	path = platypush/backend/http/static/font-awesome
-	url = https://github.com/FortAwesome/Font-Awesome
 [submodule "docs/wiki"]
 	path = docs/wiki
 	url = https://github.com/BlackLight/platypush.wiki.git

platypush/backend/http/static/font-awesome

@@ -1 +0,0 @@
-Subproject commit fcbfba1f7e445f3e135b311cb92cefdaa2634fb9

platypush/backend/http/templates/index.html

@@ -6,7 +6,8 @@
 
     <link rel="stylesheet" href="{{ url_for('static', filename='css/skeleton.css') }}">
     <link rel="stylesheet" href="{{ url_for('static', filename='css/normalize.css') }}">
-    <link rel="stylesheet" href="{{ url_for('static', filename='font-awesome/css/all.css') }}">
+    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.12.0/css/all.css"
+          integrity="sha384-REHJTs1r2ErKBuJB0fCK99gCYsVjwxHrSU0N7I1zl9vZbggVJXRMsv/sLlOAGb4M" crossorigin="anonymous">
     <link rel="stylesheet" href="{{ url_for('static', filename='css/dist/webpanel.css') }}">
 
     <script type="text/javascript">

platypush/plugins/esp/__init__.py

@@ -17,9 +17,6 @@ class EspPlugin(Plugin):
         This plugin allows you to fully control to ESP8266/ESP32 devices connected over WiFi.
         It uses the WebREPL interface embedded in MicroPython to communicate with the device.
 
-        Getting started
-        ---------------
-
         All you need to do is to flash the MicroPython firmware to your device, enable the WebREPL interface,
         and you can use this plugin to fully control the device remotely without deploying any code to the controller.