Add pipelines tab to new MR

Annabel Dunstone Grayrequested to merge
21444-pipeliens-new-mr into master

What does this MR do?

Adds pipelines tab to new MRs

Screenshots (if relevant)

Screen_Shot_2016-10-10_at_10.23.27_AM Screen_Shot_2016-10-11_at_8.59.45_AM

What are the relevant issue numbers?

Closes #21444 (closed)

Merge request reports