R1:4e75080b662b

Make naming, titles and layout more consistent between Maniphest and
Differential

Summary:
Make some display stuff more consistent.

Test Plan:
Looked at a task and a revision.

Reviewed By: jungejason
Reviewers: aran, jungejason, tuomaspelkonen
CC: aran, jungejason
Differential Revision: 462