Update to upstream version '2.11.0'
with Debian dir ce0de1798fe5079a6f34eeb586098c8e09f32426

Thanks: Bas Couwenberg for the report and patch.
Closes: #880746

this makes it easier for upstream to incorporate patches.

The javascript code causes a FTBFS due to the new behavior of Java 8 to treat
javascript in Javadoc as error. This behvavior can be ignored by using the
option

  <additionalparam>--allow-script-in-comments</additionalparam>

However the Google Analytics code is also a privacy issue hence I prefer to
remove it.

with Debian dir c7790936271ecebd3365f27734ae7123c363c4ea