PLT-6566 Prevented terms of service link from being blank (#6392)

model/config.go

@@ -714,7 +714,7 @@ func (o *Config) SetDefaults() {
 	}
 
 	if !IsSafeLink(o.SupportSettings.TermsOfServiceLink) {
-		*o.SupportSettings.TermsOfServiceLink = ""
+		*o.SupportSettings.TermsOfServiceLink = SUPPORT_SETTINGS_DEFAULT_TERMS_OF_SERVICE_LINK
 	}
 
 	if o.SupportSettings.TermsOfServiceLink == nil {

webapp/components/header_footer_template.jsx

@@ -33,7 +33,6 @@ export default class NotLoggedIn extends React.Component {
             );
         }
 
-        if (global.window.mm_config.TermsOfServiceLink) {
         content.push(
             <a
                 key='terms_link'
@@ -46,7 +45,6 @@ export default class NotLoggedIn extends React.Component {
                 <FormattedMessage id='web.footer.terms'/>
             </a>
         );
-        }
 
         if (global.window.mm_config.PrivacyPolicyLink) {
             content.push(