Moved InviteMemberModal to be controlled by a store

web/react/utils/constants.jsx

@@ -39,7 +39,8 @@ module.exports = {
         RECIEVED_LOGS: null,
         RECIEVED_ALL_TEAMS: null,
 
-        TOGGLE_IMPORT_THEME_MODAL: null
+        TOGGLE_IMPORT_THEME_MODAL: null,
+        TOGGLE_INVITE_MEMBER_MODAL: null
     }),
 
     PayloadSources: keyMirror({