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

model/config.go

@@ -214,6 +214,7 @@ type PasswordSettings struct {
 }
 
 type FileSettings struct {
+	EnableFileAttachments   *bool
 	MaxFileSize             *int64
 	DriverName              string
 	Directory               string
@@ -474,6 +475,11 @@ func (o *Config) SetDefaults() {
 		*o.FileSettings.AmazonS3SSL = true // Secure by default.
 	}
 
+	if o.FileSettings.EnableFileAttachments == nil {
+		o.FileSettings.EnableFileAttachments = new(bool)
+		*o.FileSettings.EnableFileAttachments = true
+	}
+
 	if o.FileSettings.MaxFileSize == nil {
 		o.FileSettings.MaxFileSize = new(int64)
 		*o.FileSettings.MaxFileSize = 52428800 // 50 MB