Travis: run the code style related and ruleset checks in separate stages (#1711)
Travis: run the code style related and ruleset checks in separate stages (#1711)

Travis: run the code style related and ruleset checks in separate stages

Co-authored-by: Stephen Edgar <06fa905d7f2aaced6dc72e9511c71a2a51e8aead@netweb.com.au>
WordPress-Coding-Standards/WordPress-Coding-Standards,WordPress-Coding-Standards/WordPress-Coding-Standards,paulschreiber/WordPress-Coding-Standards,jrfnl/WordPress-Coding-Standards,WordPress-Coding-Standards/WordPress-Coding-Standards,jrfnl/WordPress-Coding-Standards,WordPress-Coding-Standards/WordPress-Coding-Standards,paulschreiber/WordPress-Coding-Standards,jrfnl/WordPress-Coding-Standards,jrfnl/WordPress-Coding-Standards,paulschreiber/WordPress-Coding-Standards,paulschreiber/WordPress-Coding-Standards