Started on the UI project

Added ReactiveUI, Material design and MahApps
Added the welcome page

src/Artemis.Storage/Entities/Condition.cs

@@ -1,10 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
-
-namespace Artemis.Storage.Entities
-{
-    class Condition
-    {
-    }
-}

src/Artemis.Storage/Entities/Layer.cs

@@ -1,10 +1,18 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
+using System.Collections.Generic;
 
 namespace Artemis.Storage.Entities
 {
-    class Layer
+    internal class Layer
+    {
+        public int ProfileId { get; set; }
+        public string Name { get; set; }
+        public LayerType LayerType { get; set; }
+
+        public virtual Profile Profile { get; set; }
+        public virtual ICollection<Layer> Layers { get; set; }
+    }
+
+    internal enum LayerType
     {
     }
 }

src/Artemis.Storage/Entities/Profile.cs

@@ -1,10 +1,13 @@
-using System;
-using System.Collections.Generic;
-using System.Text;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
 
 namespace Artemis.Storage.Entities
 {
-    class Profile
+    internal class Profile
     {
+        [Key]
+        public int Id { get; set; }
+        public string Name { get; set; }
+        public virtual ICollection<Layer> Layers { get; set; }
     }
 }

src/Artemis.Storage/Entities/Setting.cs

@@ -0,0 +1,11 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace Artemis.Storage.Entities
+{
+    internal class Setting
+    {
+        [Key]
+        public string Name { get; set; }
+        public string Value { get; set; }
+    }
+}