rollback testing dsaveguards and add docs

InvenTree/common/models.py

@@ -13,7 +13,6 @@ import hashlib
 import base64
 from secrets import compare_digest
 from datetime import datetime, timedelta
-import warnings
 
 from django.apps import apps
 from django.db import models, transaction
@@ -1696,11 +1695,6 @@ class ColorTheme(models.Model):
     def get_color_themes_choices(cls):
         """ Get all color themes from static folder """
 
-        # Check that settings exsist
-        if not os.path.exists(settings.STATIC_COLOR_THEMES_DIR):
-            warnings.warn('No Theme-data found')
-            return []
-
         # Get files list from css/color-themes/ folder
         files_list = []
         for file in os.listdir(settings.STATIC_COLOR_THEMES_DIR):