Added dpi specific font scaling

Assets/RothenburgAR/Scripts/UI/FontsizeManager.cs

@@ -0,0 +1,31 @@
+using RothenburgAR.Common;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace RothenburgAR.UI
+{
+    public class FontsizeManager : Singleton<FontsizeManager>
+    {
+        private Dictionary<FontsizeClass, float> factors = new Dictionary<FontsizeClass, float>
+        {
+            {
+                FontsizeClass.Header, 1f
+            },
+            {
+                FontsizeClass.Body, 0.4f
+            }
+        };
+
+        public float GetFontsize(FontsizeClass sizeClass)
+        {
+            return Screen.dpi * factors[sizeClass];
+        }
+    }
+
+    public enum FontsizeClass
+    {
+        Header,
+        Body
+    }
+}

Assets/RothenburgAR/Scripts/UI/FontsizeManager.cs.meta

@@ -0,0 +1,13 @@
+fileFormatVersion: 2
+guid: 78b8d14800915e84694580fb0d241681
+timeCreated: 1535122456
+licenseType: Free
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/RothenburgAR/Scripts/UI/FontsizeSelector.cs

@@ -0,0 +1,28 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace RothenburgAR.UI
+{
+    public class FontsizeSelector : MonoBehaviour
+    {
+        public FontsizeClass SizeClass = FontsizeClass.Body;
+
+        void Start()
+        {
+            var tmproText = gameObject.GetComponent<TMPro.TextMeshProUGUI>();
+            if (tmproText != null)
+            {
+                tmproText.enableAutoSizing = true;
+                tmproText.fontSizeMax = FontsizeManager.Instance.GetFontsize(this.SizeClass);
+                tmproText.fontSizeMin = tmproText.fontSizeMax * 0.8f;
+            }
+        }
+
+        void Update()
+        {
+
+        }
+    }
+
+}

Assets/RothenburgAR/Scripts/UI/FontsizeSelector.cs.meta

@@ -0,0 +1,13 @@
+fileFormatVersion: 2
+guid: 8b136c9157840904ba79e96d50f494bc
+timeCreated: 1535125739
+licenseType: Free
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/RothenburgAR/Scripts/Updater/UpdaterBehaviour.cs

@@ -179,7 +179,7 @@ namespace RothenburgAR.Updater
         {
             //TODO check existing file for creation/alteration date to see if download is necessary
 
-            var mediaIDs = exhibit.Pois.Select(p => p.MediaId).ToList();
+            var mediaIDs = exhibit.Pois.Select(p => p.MediaId).Except(new List<string> { null }).ToList();
 
             foreach (var mediaId in mediaIDs)
             {