title: angular showing forms depending on if I am logged in or not
body: <p>I am loggin in via Oauth2 authorisation. I receive the token in the webaddress which I am getting through the params. </p>
  
  <p>Basically I want the login button to dissapear and logout button to appear.</p>
  
  <p>when I use *ngIf="access_token" it doesn't work, right now I am using 
  *ngIf="isLoggedIn==='yes'" to show the button. 
  so when I get the accesToken I call a messageservice which has a Subject() that sends it back to the component with the updated "yes" or "no" variable.
  There must be a better way?</p>