Fix for LOGBACK-266 - FixedWindowRollingPolicy MAX_WINDOW_SIZE too small

correct ThreadPoolFactoryBean link to javadocs, correct typo in name of fieldsToCascade field in ComponentDelegate, added receiver function in ConfigurationDelegate (incomplete)

LOGBACK-266 - increase max window size of FixedWindowRollingPolicy to 20.  12 is too restrictive, and the users have voted for it to be increased

make sure that all the 'view as groovy' links work, Gaffer does not support <receiver> at this stage, nor does the translator

This should resolve LOGBACK-749.

throws an exception, attempt to provide the IP address instead.  This
is useful on those systems without a hostname explicitly defined.

made FileAppenderResilienceTest more tolerant, added code wait for compression job in TimeBasedRollingPolicy