Add "hidden" property to status.

9 jobs for status-hidden in 7 minutes and 20 seconds (queued for 1 second)
Status Name Job ID Coverage
  Test
passed clang-c++11 #81071
Linux

00:04:53

passed cppcheck #81073
Linux

00:07:19

passed doc #81078
Linux

00:00:12

passed gcc-c++11 #81070
Linux

00:04:53

passed macos-c++11 #81072
Apple

00:03:10

passed VS2015-32-bit #81077
VS2015

00:01:15

passed VS2015-64-bit #81076
VS2015

00:01:27

passed VS2017-32-bit #81075
VS2017

00:01:38

passed VS2017-64-bit #81074
VS2015

00:01:23