Add some system information to the developer page and bug reports

This provides information about the Java version being used as well as
the operating system.

task #36: Add support for java 8 
http://github.com/jpschewe/fll-sw/issues/issue/36
Update changes

task #36: Add support for java 8 
http://github.com/jpschewe/fll-sw/issues/issue/36