style(Right Side Bar): remove italics for design alignment
style(Right Side Bar): remove italics for design alignment

Fixes: UIDEV-198

test plan:
- ensure the italics have been removed within the Right Side Bar
  "Nothing for now" / "Nothing for the next week" / "1 more..."

Change-Id: I32d91e0f9b16cf7838e67899aec780e9833fd0b1
Reviewed-on: https://gerrit.instructure.com/160964
Tested-by: Jenkins
Reviewed-by: Stephen Jensen <af2501a686d970a4ae53690c2b6f7e448f31f7df@instructure.com>
QA-Review: Dan Sasaki <ae19fabf7fe19dff310008c9b6a4d2ec84d311d8@instructure.com>
Product-Review: Kyle Follett <3f0dcef4ea7407b413e459a87705152d37b86e63@instructure.com>

sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,instructure/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,instructure/canvas-lms