Made diff file headers sticky
What does this MR do?
Made the diff file header sticky when scrolling down.
Screen_Recording_2018-11-20_at_18.49.25
What are the relevant issue numbers?
Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/48816
Does this MR meet the acceptance criteria?
-
Changelog entry added, if necessary -
Documentation created/updated -
Tests added for this feature/bug -
Conforms to the code review guidelines -
Conforms to the merge request performance guidelines -
Conforms to the style guides -
Conforms to the database guides -
Link to e2e tests MR added if this MR has Requires e2e tests label. See the Test Planning Process.