[docs] Docs updates (#10678)

* Display PendingShipments panel

- Overview of all outstanding shipments

* Update UI tests

* add separate page for troubleshooting

* Restructure menus a bit

* Fix top-level page for mobile app

* Add option to override default value in docs

* Update global.md

* Formatting updates

* Update sales pages

* Move order images to "purchasing"

* Small tweaks

* Make "Concepts" a top-level documentation item

* Update image

docs/docs/concepts/company.md

@@ -29,7 +29,7 @@ It is recommended to disable a company rather than deleting it, as this will pre
 
 To disable a company, simply edit the company details and set the `active` attribute to `False`:
 
-{{ image("order/company_disable.png", "Disable Company") }}
+{{ image("purchasing/company_disable.png", "Disable Company") }}
 
 To re-enable a company, simply follow the same process and set the `active` attribute to `True`.
 
@@ -49,7 +49,7 @@ Each company can have multiple assigned *Contacts*. A contact identifies an indi
 
 The list of contacts associated with a particular company is available in the <span class='badge inventree nav main'>{{ icon("users") }} Contacts</span> navigation tab:
 
-{{ image("order/contact_list.png", "Company Contacts") }}
+{{ image("purchasing/contact_list.png", "Company Contacts") }}
 
 A *contact* can be assigned to orders, (such as [purchase orders](../purchasing/purchase_order.md) or [sales orders](../sales/sales_order.md)).
 

docs/docs/concepts/project_codes.md

@@ -37,10 +37,10 @@ By default, project code support is disabled. Select the *Enable Project Codes*
 
 Project codes can be assigned to an order when the order is created, or at any later stage by simply editing the order. If project code support is enabled, a *Project Code* field is available in the order details form:
 
-{{ image("order/assign_project_code.png", "Assign Project Code") }}
+{{ image("purchasing/assign_project_code.png", "Assign Project Code") }}
 
 ## Filtering by Project Codes
 
 The order tables can be easily filtered or sorted by project code:
 
-{{ image("order/filter_by_project.png", "Filter by Project Code") }}
+{{ image("purchasing/filter_by_project.png", "Filter by Project Code") }}

docs/docs/concepts/threat_model.md

@@ -2,7 +2,7 @@
 title: Threat Model
 ---
 
-## Thread Model
+## Threat Model
 
 Deploying InvenTree to production requires to knowledge of the security assumptions and threat model of the underlying system. This document outlines the security assumptions and threat model of InvenTree as a software. It is assumed that the system that InvenTree is deployed on top of is configured following best practices and is trusted.