Linux fixes:

-Copy PropertyChanged.Fody.dll to Tools/Fody in MediaBrowser.Model.csproj
-Check if root for WebSocketServer.FlashAccessPolicyEnabled (port < 1024)
-Check resolution value !=0 before SetResolution
-Catch _userManager.RefreshUsersMetadata exception when running MB3 for the first time
-Fix _appHost.Init() missing argument
-FFmpeg: set default and execute permission(766) to ffmpeg and ffprobe
-FFmpeg: Detect the OS type and download the correct version 
-Rename MediaBrowser.WebDashboard/dashboard-ui/scripts/Itemdetailpage.js to itemdetailpage.js

MediaBrowser.Server.Implementations/Drawing/ImageProcessor.cs

@@ -228,8 +228,17 @@ namespace MediaBrowser.Server.Implementations.Drawing
                             // Graphics.FromImage will throw an exception if the PixelFormat is Indexed, so we need to handle that here
                             using (var thumbnail = new Bitmap(newWidth, newHeight, PixelFormat.Format32bppPArgb))
                             {
+                                #if __MonoCS__
+                                // Mono throw an exeception if assign 0 to SetResolution
+                                if (originalImage.HorizontalResolution != 0 && originalImage.VerticalResolution != 0)
+                                {
+                                    // Preserve the original resolution
+                                    thumbnail.SetResolution(originalImage.HorizontalResolution, originalImage.VerticalResolution);
+                                }
+                                #else
                                 // Preserve the original resolution
                                 thumbnail.SetResolution(originalImage.HorizontalResolution, originalImage.VerticalResolution);
+                                #endif
 
                                 using (var thumbnailGraph = Graphics.FromImage(thumbnail))
                                 {