title: Skobbler POI grouping priority
body: <p>I am using Skobbler map for iOS application.
  Is it possible to set priority for POI category so when multiple POIs group, icon of that category be on top?</p>
  
  <p>So if info icon has higher priority it should be shown in group icon instead of restaurant.</p>
  
  <p><img src="https://i.stack.imgur.com/Abi3p.png" alt="enter image description here"> </p>
  
  <p>I tried to set priority tag of category in json style file but it didn't work. </p>