And notice shortcodes (#537)

* Added information panel shortcodes (#437)

* Added information panel shortcodes

* Fixed dark mixin

* Moved mixin location to correct location

Co-authored-by: Luiz F. A. de Prá <luizdepra@users.noreply.github.com>

* Fix SCSS styling

* Update generated files

* Fix notice HTML

* Fix Makefile

* Rename JS file

* Adsd emoji support for lang selectors

* Fix notices and other things

* Fix JS on template

* Update  example content

* Update images

* Update generated files

* Fix netlify preview

* Fix netlify preview build

* Fix netlify theme path

Co-authored-by: Jian Liew <jianloongliew@gmail.com>

exampleSite/content/posts/more-rich-content.md

@@ -0,0 +1,43 @@
++++
+author = "Hugo Authors"
+title = "More Rich Content"
+date = "2019-03-09"
+description = "A brief description about Hugo Coder's Custom Shortcodes"
+tags = [
+    "shortcodes"
+]
++++
+
+Hugo Coder provides some Custom Shortcodes.
+<!--more-->
+---
+
+## Shortcodes Avisos
+
+{{< notice note >}}
+One note here.
+{{< /notice >}}
+
+{{< notice tip >}}
+I'm giving a tip about something.
+{{< /notice >}}
+
+{{< notice example >}}
+This is an example.
+{{< /notice >}}
+
+{{< notice question >}}
+Is this a question?
+{{< /notice >}}
+
+{{< notice info >}}
+Notice that this box contain information.
+{{< /notice >}}
+
+{{< notice warning >}}
+This is the last warning!
+{{< /notice >}}
+
+{{< notice error >}}
+There is an error in your code.
+{{< /notice >}}