Add support for image/svg+xml content type to raw servlet

src/main/distrib/data/defaults.properties

@@ -1324,7 +1324,7 @@ web.tracwikiExtensions = tracwiki
 #
 # SPACE-DELIMITED
 # SINCE 0.5.0
-web.imageExtensions = bmp jpg jpeg gif png ico 
+web.imageExtensions = bmp ico gif jpg jpeg png svg
 
 # Registered extensions for binary blobs
 #

src/main/java/com/gitblit/servlet/RawServlet.java

@@ -28,8 +28,6 @@ import java.util.List;
 import java.util.Map;
 import java.util.TreeMap;
 
-import com.google.inject.Inject;
-import com.google.inject.Singleton;
 import javax.servlet.ServletContext;
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServlet;
@@ -58,6 +56,8 @@ import com.gitblit.utils.ByteFormat;
 import com.gitblit.utils.JGitUtils;
 import com.gitblit.utils.MarkdownUtils;
 import com.gitblit.utils.StringUtils;
+import com.google.inject.Inject;
+import com.google.inject.Singleton;
 
 /**
  * Serves the content of a branch.
@@ -248,7 +248,7 @@ public class RawServlet extends HttpServlet {
 						}
 					}
 
-					if (isTextType(contentType)) {
+					if (isTextType(contentType) || isTextDataType(contentType)) {
 
 						// load, interpret, and serve text content as UTF-8
 						String [] encodings = runtimeManager.getSettings().getStrings(Keys.web.blobEncodings).toArray(new String[0]);
@@ -382,6 +382,13 @@ public class RawServlet extends HttpServlet {
 		return false;
 	}
 
+	protected boolean isTextDataType(String contentType) {
+		if ("image/svg+xml".equals(contentType)) {
+			return true;
+		}
+		return false;
+	}
+
 	/**
 	 * Override all text types to be plain text.
 	 *