Added option to timeout sockets server-side. (#304)

Signed-off-by: Chris Larsen <clarsen@yahoo-inc.com>
Disable the TestGraphHandler.java class for maven unit tests as it is
failing in the travis ci builds due failed lookups of the gnuplot
scripts in the class path.

Signed-off-by: Chris Larsen <clarsen@yahoo-inc.com>
Add netty decompressor so that the API can accept gzipped data,
particularly useful for the /api/put endpoint. Thanks to Pierre Laden
and Philip Warren

Signed-off-by: Chris Larsen <clarsen@yahoo-inc.com>