qemu: add missing fields and put the specific config fields on top

website/source/docs/builders/qemu.html.md.erb

@@ -63,22 +63,28 @@ this build to run. We recommend you check out the
 [Community Templates](https://www.packer.io/community-tools.html#templates)
 for a practical usage example.
 
-## Configuration Reference
-
-There are many configuration options available for the Qemu builder. They are
-organized below into two categories: required and optional. Within each
-category, the available options are alphabetized and described.
-
-In addition to the options listed here, a
-[communicator](/docs/templates/communicator.html) can be configured for this
-builder.
-
 Note that you will need to set `"headless": true` if you are running Packer
 on a Linux server without X11; or if you are connected via ssh to a remote
 Linux server and have not enabled X11 forwarding (`ssh -X`).
 
+## Qemu Specific Configuration Reference
 
-## ISO Configuration Reference
+There are many configuration options available for the builder. In addition to
+the items listed here, you will want to look at the general configuration
+references for [ISO](#iso-configuration),
+[HTTP](#http-directory-configuration),
+[Floppy](#floppy-configuration),
+[Boot](#boot-configuration),
+[Shutdown](#shutdown-configuration),
+[Communicator](#communicator-configuration)
+configuration references, which are
+necessary for this build to succeed and can be found further down the page.
+
+### Optional:
+
+<%= partial "partials/builder/qemu/Config-not-required" %>
+
+## ISO Configuration
 
 <%= partial "partials/common/ISOConfig" %>
 
@@ -90,14 +96,14 @@ Linux server and have not enabled X11 forwarding (`ssh -X`).
 
 <%= partial "partials/common/ISOConfig-not-required" %>
 
-## Http directory configuration reference
+## Http directory configuration
 
 <%= partial "partials/common/HTTPConfig" %>
 ### Optional:
 
 <%= partial "partials/common/HTTPConfig-not-required" %>
 
-## Floppy configuration reference
+## Floppy configuration
 
 <%= partial "partials/common/FloppyConfig" %>
 
@@ -105,12 +111,14 @@ Linux server and have not enabled X11 forwarding (`ssh -X`).
 
 <%= partial "partials/common/FloppyConfig-not-required" %>
 
-## Qemu Configuration Reference
+## Shutdown configuration
 
 ### Optional:
-<%= partial "partials/builder/qemu/Config-not-required" %>
 
-## Boot Configuration Reference
+<%= partial "partials/common/shutdowncommand/ShutdownConfig-not-required" %>
+
+
+## Boot Configuration
 
 <%= partial "partials/common/bootcommand/VNCConfig" %>
 <%= partial "partials/common/bootcommand/BootConfig" %>
@@ -120,6 +128,12 @@ Linux server and have not enabled X11 forwarding (`ssh -X`).
 <%= partial "partials/common/bootcommand/BootConfig-not-required" %>
 
 
+### Communicator Configuration
+
+#### Optional:
+
+<%= partial "partials/helper/communicator/Config-not-required" %>
+
 
 ### Troubleshooting