reenabling the shrinkwrap validator
tweak(style): add top margin to service span in header
Merge pull request #1521 from mozilla/issue-1516

tweak(style): add top margin to service span in header
Merge pull request #1529 from pdehaan/issue-1524

reenabling the shrinkwrap validator
fix(tests): Update service-mixin tests.

Fixes #1400.