Use GitLab Pages v0.4.2

Nick Thomas requested to merge pages-0.4.2 into master

What does this MR do?

Updates GitLab Pages to v0.4.2

Are there points in the code the reviewer needs to double check?

Why was this MR needed?

Support for precompressed .gz content in GitLab 9.2

Does this MR meet the acceptance criteria?

Merge request reports