Big refactor, many minor fixes (#441)

* Big refactor, many minor fixes

* Link fixes, icon edits

* Index and ToC fixes

* update icons in theme lib and add to device guides index

* WIP - refactor Initial setup, LAN, FF, others

* First draft ready, many fixes and edits

* Ooops - minor edits and changes on initial setup

* Add change password guide (try 2).

* Remove change password menu item from guides

* Fix display bug, think different

---------

Co-authored-by: Lucy Cifferello <12953208+elvece@users.noreply.github.com>
Co-authored-by: gStart9 <george@start9labs.com>

site/source/guides/flashing/index.rst

@@ -0,0 +1,50 @@
+.. _flashing:
+
+========
+Flashing
+========
+
+Here you will find our flashing guides for the Raspberry Pi and x86_64 (most desktops, laptops, mini PCs, servers, etc) architectures. Librem Mini owners can use the firmware flashing guide to get StartOS-specific firmware.
+
+.. raw:: html
+
+  <div class="topics-grid grid-container full">
+
+  <div class="grid-x grid-margin-x">
+
+.. topic-box::
+  :title: Flashing (Raspberry Pi)
+  :link: flashing-pi
+  :icon: scylla-icon scylla-icon--apps
+  :class: large-4
+  :anchor: View Guide
+
+  Flash StartOS for use on a Raspberry Pi
+
+.. topic-box::
+  :title: Flashing (x86_64)
+  :link: flashing-x86
+  :icon: scylla-icon scylla-icon--overview
+  :class: large-4
+  :anchor: View Guide
+
+  Flash StartOS for use on an x86_64 machine
+
+.. topic-box::
+  :title: Flashing (Firmware)
+  :link: flashing-firmware
+  :icon: scylla-icon scylla-icon--integrations
+  :class: large-4
+  :anchor: Librem Mini Firmware
+
+  Flash the custom firmware for StartOS on an existing Librem Mini
+
+.. toctree::
+  :hidden:
+  :maxdepth: 2
+
+  flashing-pi
+  flashing-x86
+  flashing-firmware
+
+Appreciate what we're doing?  Please consider a `donation to Start9 <https://btcpay.start9.com/apps/2Et1JUmJnDwzKncfVBXvspeXiFsa/crowdfund>`_.