CentOS 7 and Scientific Linux 7 should also use systemd module
fix errors in docs
Merge pull request #13751 from claytron/doc-fixes

fix errors in docs
Fix #13744
gnomedesktop typo: clock_format instead of clock_show_format
Merge pull request #13760 from stanim/fixed-clock-format-typo

gnomedesktop typo: clock_format instead of clock_show_format
Fix paths
Merge pull request #13762 from pass-by-value/master_tops_test_fix

Fix paths
Merge pull request #13748 from simoncadman/develop

CentOS 7 and Scientific Linux 7 should also use systemd module