T2.6 t2.7 mohamed khairy 78 122 view/accept/rejectrequests

Please review my code of the last commit 

@RanaMohsen  @ahmedabdelhamied  @ahmedsamouka  @boudy1522  @moekage 
for the scenario reviewer you must add and id like this http://0.0.0.0:3000/handling_requests/index?id=3 for example as I made by params[:id] as the sighn in story isn't finished yet