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

utils/config.go

@@ -405,6 +405,7 @@ func getClientConfig(c *model.Config) map[string]string {
 	props["ReportAProblemLink"] = *c.SupportSettings.ReportAProblemLink
 	props["SupportEmail"] = *c.SupportSettings.SupportEmail
 
+	props["EnableFileAttachments"] = strconv.FormatBool(*c.FileSettings.EnableFileAttachments)
 	props["EnablePublicLink"] = strconv.FormatBool(c.FileSettings.EnablePublicLink)
 	props["ProfileHeight"] = fmt.Sprintf("%v", c.FileSettings.ProfileHeight)
 	props["ProfileWidth"] = fmt.Sprintf("%v", c.FileSettings.ProfileWidth)