Fix raw page binary content type when running behind reverse proxy

Change-Id: I9f613114b2bb4c1dacae6e67c7673149a0476cf1

releases.moxie

 	- Fix potential NPE on removing uncached repository from cache
 	- Ignore the default contents of .git/description file
 	- Fix error on generating activity page when there is no activity
+	- Fix raw page content type of binaries when running behind a reverse proxy
     changes:
 	- Personal repository prefix (~) is now configurable (issue-265)
 	- Reversed line links in blob view (issue-309)

src/main/java/com/gitblit/wicket/pages/RawPage.java

 
 	private final Logger logger = LoggerFactory.getLogger(getClass().getSimpleName());
 
+	String contentType;
+
 	public RawPage(final PageParameters params) {
 		super(params);
 
 				if (StringUtils.isEmpty(blobPath)) {
 					// objectid referenced raw view
 					byte [] binary = JGitUtils.getByteContent(r, objectId);
-					response.setContentType("application/octet-stream");
+					contentType = "application/octet-stream";
+					response.setContentType(contentType);
 					response.setContentLength(binary.length);
 					try {
 						response.getOutputStream().write(binary);
 						case 2:
 							// image blobs
 							byte[] image = JGitUtils.getByteContent(r, commit.getTree(), blobPath, true);
-							response.setContentType("image/" + extension.toLowerCase());
+							contentType = "image/" + extension.toLowerCase();
+							response.setContentType(contentType);
 							response.setContentLength(image.length);
 							try {
 								response.getOutputStream().write(image);
 						case 3:
 							// binary blobs (download)
 							byte[] binary = JGitUtils.getByteContent(r, commit.getTree(), blobPath, true);
+							contentType = "application/octet-stream";
 							response.setContentLength(binary.length);
-							response.setContentType("application/octet-stream; charset=UTF-8");
+							response.setContentType(contentType);
 
 						    try {
 						    	WebRequest request = (WebRequest) requestCycle.getRequest();
 							// plain text
 							String content = JGitUtils.getStringContent(r, commit.getTree(),
 									blobPath, encodings);
-							response.setContentType("text/plain; charset=UTF-8");
+							contentType = "text/plain; charset=UTF-8";
+							response.setContentType(contentType);
 							try {
 								response.getOutputStream().write(content.getBytes("UTF-8"));
 							} catch (Exception e) {
 						// plain text
 						String content = JGitUtils.getStringContent(r, commit.getTree(), blobPath,
 								encodings);
-						response.setContentType("text/plain; charset=UTF-8");
+						contentType = "text/plain; charset=UTF-8";
+						response.setContentType(contentType);
 						try {
 							response.getOutputStream().write(content.getBytes("UTF-8"));
 						} catch (Exception e) {
 			}
 		});
 	}
+
+	@Override
+	protected void setHeaders(WebResponse response) {
+		super.setHeaders(response);
+		if (!StringUtils.isEmpty(contentType)) {
+			response.setContentType(contentType);
+		}
+	}
 }