fix translations not loaded correctly

src/main/java/com/commafeed/frontend/CacheFilter.java

@@ -0,0 +1,29 @@
+package com.commafeed.frontend;
+
+import java.io.IOException;
+
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServletResponse;
+
+public class CacheFilter implements Filter {
+
+	@Override
+	public void init(FilterConfig filterConfig) throws ServletException {
+	}
+
+	@Override
+	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
+		((HttpServletResponse) response).setHeader("Cache-Control", "no-cache");
+		chain.doFilter(request, response);
+	}
+
+	@Override
+	public void destroy() {
+	}
+
+}