Fix case sensitive 'Origin' header

src/main/java/cz/hsrs/servlet/security/ControllerServlet.java

@@ -69,7 +69,7 @@ public class ControllerServlet extends DBServlet {
             }
             /** request doesn't contain coming parameter - came from REST client*/
             else{
-                String originDomain = req.getHeader("origin");
+                String originDomain = req.getHeader("Origin");
                 originDomain = originDomain == null ? req.getScheme() + ":\\\\" + req.getServerName() : "*";
                 resp.setStatus(200);
                 resp.setHeader("Access-Control-Allow-Origin", originDomain);