PLT-6262 Add config setting to disable file attachments (#6301)

* Add config setting to disable file attachments

* Add unit tests

* Updating UI for no attachments (#6312)

* Update UI text on file upload System Console setting (#6313)

* Update storage_settings.jsx

* Update en.json

config/config.json

@@ -97,6 +97,7 @@
         "Symbol": false
     },
     "FileSettings": {
+        "EnableFileAttachments": true,
         "MaxFileSize": 52428800,
         "DriverName": "local",
         "Directory": "./data/",