[PUI] Added AboutInventreeModal (#5813)

* updated typing to allow either link or action

* fixed typing

* made it possible to use an action instead of a link

* added ServerInfo Modal skeleton

* fixed anchor

* added content to ServerInfo

* Factored database lookup out

* Extended status API to CUI level

* extended ServerInfo to CUI level

* Made modal larger

* fixed default settings

* Refactored urls into seperate functions

* Refactored python version into seperate function

* Added endpoint and modal for PUI version modal

* switched to indirect imports to reduce imports

* Added copy button

* Added full copy button

* added default

* cleaned unused vars

* cleaned unused  vars

* Refactored auth check for InfoView

* implemented suggested changes

* fixed check logic

InvenTree/templates/about.html

@@ -77,7 +77,7 @@
     <tr>
         <td><span class='fas fa-mobile-alt'></span></td>
         <td>{% trans "Mobile App" %}</td>
-        <td><a href="{% inventree_docs_url %}/app/app">{% inventree_docs_url %}/app/app</a></td>
+        <td><a href="{% inventree_app_url %}">{% inventree_app_url %}</a></td>
     </tr>
     <tr>
         <td><span class='fas fa-bug'></span></td>