Don't display pts possible for rubrics w/o pts
Don't display pts possible for rubrics w/o pts

closes OUT-2189

test plan:
  - in a course, create an outcome
  - click on the "Manage Rubrics" button to view course rubrics
  - create a rubric with a single outcome as a criterion, making
    sure "Use this criterion for scoring" is unchecked when importing
    into the rubric
  - refresh the course rubrics page
  - confirm that the rubric only displays the total number of criteria
    and does not display any points possible

Change-Id: Ic18b7b80228b02724af88190bce58cd3e051433d
Reviewed-on: https://gerrit.instructure.com/170979
Tested-by: Jenkins
Reviewed-by: Frank Murphy III <ed7a7068a7b39653c9ca1c429cffcb87c4a069c6@instructure.com>
Reviewed-by: Neil Gupta <cc4fec8a34766005dd45d48be045c08d736c11ed@instructure.com>
QA-Review: Brian Watson <4411c2aac809443ec63e2dd517de0f2dbc7408c6@instructure.com>
Product-Review: Neil Gupta <cc4fec8a34766005dd45d48be045c08d736c11ed@instructure.com>

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