Migrations - Added migration to segments

Layout - Fixed rotation not always applying (workaround)
Conditions - Added string operators

src/Artemis.Storage/Migrations/M4ProfileSegments.cs

@@ -0,0 +1,39 @@
+using System;
+using System.Linq;
+using System.Runtime.InteropServices;
+using Artemis.Storage.Entities.Profile;
+using Artemis.Storage.Migrations.Interfaces;
+using LiteDB;
+
+namespace Artemis.Storage.Migrations
+{
+    public class M4ProfileSegmentsMigration : IStorageMigration
+    {
+        public int UserVersion => 4;
+
+        public void Apply(LiteRepository repository)
+        {
+            var profiles = repository.Query<ProfileEntity>().ToList();
+            foreach (var profileEntity in profiles)
+            {
+                foreach (var folder in profileEntity.Folders.Where(f => f.MainSegmentLength == TimeSpan.Zero))
+                {
+                    if (folder.PropertyEntities.Any(p => p.KeyframeEntities.Any()))
+                        folder.MainSegmentLength = folder.PropertyEntities.Where(p => p.KeyframeEntities.Any()).Max(p => p.KeyframeEntities.Max(k => k.Position));
+                    if (folder.MainSegmentLength == TimeSpan.Zero)
+                        folder.MainSegmentLength = TimeSpan.FromSeconds(5);
+                }
+
+                foreach (var layer in profileEntity.Layers.Where(l => l.MainSegmentLength == TimeSpan.Zero))
+                {
+                    if (layer.PropertyEntities.Any(p => p.KeyframeEntities.Any()))
+                        layer.MainSegmentLength = layer.PropertyEntities.Where(p => p.KeyframeEntities.Any()).Max(p => p.KeyframeEntities.Max(k => k.Position));
+                    if (layer.MainSegmentLength == TimeSpan.Zero)
+                        layer.MainSegmentLength = TimeSpan.FromSeconds(5);
+                }
+
+                repository.Update(profileEntity);
+            }
+        }
+    }
+}