Introduce caching on response of Projects::MergeRequestsController#show.html
While working on #330893 (closed), profiling the Projects::MergeRequestsController#show.html
controller action shows that it takes about 100ms to render the _widget.html.haml
partial.
We can cache it so when it hasn't change, we don't need to present fresh data and save some time.
Edited by Patrick Bajao