PLT-3192 EE: Restricted site name to 30 characters (#3560)

* Restricted site name to 30 characters

* Added maxlength to TextSetting

webapp/utils/constants.jsx

@@ -761,6 +761,8 @@ export default {
     MAX_PASSWORD_LENGTH: 64,
     MIN_TRIGGER_LENGTH: 1,
     MAX_TRIGGER_LENGTH: 128,
+    MAX_TEXTSETTING_LENGTH: 1024,
+    MAX_SITENAME_LENGTH: 30,
     TIME_SINCE_UPDATE_INTERVAL: 30000,
     MIN_HASHTAG_LINK_LENGTH: 3,
     CHANNEL_SCROLL_ADJUSTMENT: 100,