Remove CUI (#8384)

* remove CUI

* fix loading

* fix login middleware

* remove css template functions

* tmp fix for recurtion

* remove old test

* fix assertations

* fix middleware tests

* re-add plugin tags

* remove thirdpartjs

* re-add mfa urls

* remove old js

* remove cui tags

* simplify error testing

* use license endpoint for testing instead

* disable successful test

* revert de-activation

* remove references to old UI customisation

* update docs to remove reference to removed page

* disable availabilty check

* possible fix to importing problem

* Revert "possible fix to importing problem"

This reverts commit ee9fccdc8c.

* remove old get_context_data

* fix migration

* remove unused function

* remove unused stuff

* remove unused template

* fix formatting of readme

tasks.py

@@ -395,8 +395,6 @@ def remove_mfa(c, mail=''):
 )
 def static(c, frontend=False, clear=True, skip_plugins=False):
     """Copies required static files to the STATIC_ROOT directory, as per Django requirements."""
-    manage(c, 'prerender')
-
     if frontend and node_available():
         frontend_trans(c)
         frontend_build(c)
@@ -1001,17 +999,10 @@ def test_translations(c):
         'migrations': 'Run migration unit tests',
         'report': 'Display a report of slow tests',
         'coverage': 'Run code coverage analysis (requires coverage package)',
-        'cui': 'Do not run CUI tests',
     }
 )
 def test(
-    c,
-    disable_pty=False,
-    runtest='',
-    migrations=False,
-    report=False,
-    coverage=False,
-    cui=False,
+    c, disable_pty=False, runtest='', migrations=False, report=False, coverage=False
 ):
     """Run unit-tests for InvenTree codebase.
 
@@ -1047,9 +1038,6 @@ def test(
     else:
         cmd += ' --exclude-tag migration_test'
 
-    if cui:
-        cmd += ' --exclude-tag=cui'
-
     if coverage:
         # Run tests within coverage environment, and generate report
         run(c, f'coverage run {managePyPath()} {cmd}')