title: Ignore query params when back browser button is pressed
body: <p>I have three tabs in my dashboard components. When any tab is clicked <code>url</code> is appended with <code>queryParam</code> with tab info (say <code>root/dashboard?tab=tab1</code>). 
  If users clicked on multiple tabs and then presses back button, <code>queryParams</code> of previous tabs are shown, rightfully so. </p>
  
  <p>However, I want to router to ignore all the <code>queryParams</code> and navigate to the previous route (say <code>root/profiles</code>).</p>
  
  <p>How to do this in <code>Angular</code>?</p>