fix days text overlaps in speedgrader
fix days text overlaps in speedgrader

fixes EVAL-2138
flag=none

test plan:
- have a course with atleast one student and one
  assignment.
- create a file upload assignment with a past
  due date.
- submit a file to the assignment as the student.
- make an annotation in the submission.
- view the annotation as the student.
- go back to the speedgrader and notice the text
  does not overlaps.

Change-Id: Iddbc1804dda1ef2756b71bcc9b0ef26a27d9c3cb
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/283017
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>
Reviewed-by: Syed Hussain <1379c89cd1d253d3c5a299cc4d8f6002ada9d6b5@instructure.com>
Reviewed-by: Kai Bjorkman <4693b3d9e71784d629732770ab5e83ed8fbdb83e@instructure.com>
QA-Review: Aaron Shafovaloff <d0ee6b99167c663aba7bc3efd806fe8d6cad437b@instructure.com>
Product-Review: Syed Hussain <1379c89cd1d253d3c5a299cc4d8f6002ada9d6b5@instructure.com>

sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms