title: prevent inadvertant tab close in chrome, etc
body: <p>In Chrome I typically have 10-15 tabs open and am constantly doing two things:</p>
  
  <p>Accidentally closing tabs when clicking on them because I hit the X instead.</p>
  
  <p>Accidentally dragging tabs off the browser onto their own new window.</p>
  
  <p>Which extension prevents this.  If possible I would disable the X, and the drag to new window  feature as well.  How easy is it to write an extension to do this.  </p>