OutcomesImportApiController - Polish up some loose ends
OutcomesImportApiController - Polish up some loose ends

There were a couple of minor changes that didn't make it into the original PS
in which they were introduced.  This commit makes those changes

Test Plan:
    NOTE: You will need to have the Academic Benchmarks API key, and you
    will need to run this from an IP address inside the Instructure
    network

    * As a site-admin, make the following requests and verify that they
          work.  Do the same as a regular account admin, a teacher, and
          a student, and verify that those DO NOT work (should return 401
          unauthorized
        - Through the API, query for available GUIDs to import
            - Get to "/api/v1/accounts/#{@account.id}/outcomes_import/available"
        - Through the API, schedule a GUID for importing
            - Post to "/api/v1/accounts/#{@account.id}/outcomes_import" with
              guid as argument

Change-Id: Ib203628e7d77851fa767570d610c499bf21d417a
Reviewed-on: https://gerrit.instructure.com/57202
Tested-by: Jenkins
Reviewed-by: Simon Williams <088e16a1019277b15d58faf0541e11910eb756f6@instructure.com>
QA-Review: Michael Hargiss <59e3fde81b8d9a4f5e0cc016a3c2695591912604@instructure.com>
Product-Review: Benjamin Porter <fdd60f2e3d506934848b3d0fff79c55f544a2d47@instructure.com>

whalejasmine/canvas-lms,HotChalk/canvas-lms,fronteerio/canvas-lms,antoniuslin/canvas-lms,HotChalk/canvas-lms,redconfetti/canvas-lms,wrdsb/canvas-lms,leftplusrightllc/canvas-lms,sfu/canvas-lms,roxolan/canvas-lms,Rvor/canvas-lms,sdeleon28/canvas-lms,greyhwndz/canvas-lms,HotChalk/canvas-lms,roxolan/canvas-lms,ShreniiNepal/shrenii_lmp,grahamb/canvas-lms,fronteerio/canvas-lms,greyhwndz/canvas-lms,HotChalk/canvas-lms,leftplusrightllc/canvas-lms,sdeleon28/canvas-lms,wrdsb/canvas-lms,juoni/canvas-lms,venturehive/canvas-lms,jay3126/canvas-lms,sdeleon28/canvas-lms,efrj/canvas-lms,leftplusrightllc/canvas-lms,Rvor/canvas-lms,SwinburneOnline/canvas-lms,Jyaasa/canvas-lms,shidao-fm/canvas-lms,utkarshx/canvas-lms,greyhwndz/canvas-lms,jay3126/canvas-lms,grahamb/canvas-lms,redconfetti/canvas-lms,efrj/canvas-lms,skmezanul/canvas-lms,grahamb/canvas-lms,ShreniiNepal/shrenii_lmp,roxolan/canvas-lms,wrdsb/canvas-lms,djbender/canvas-lms,ShreniiNepal/shrenii_lmp,tgroshon/canvas-lms,kyroskoh/canvas-lms,djbender/canvas-lms,whalejasmine/canvas-lms,sfu/canvas-lms,utkarshx/canvas-lms,antoniuslin/canvas-lms,shidao-fm/canvas-lms,venturehive/canvas-lms,Jyaasa/canvas-lms,Rvor/canvas-lms,jay3126/canvas-lms,Jyaasa/canvas-lms,fronteerio/canvas-lms,tgroshon/canvas-lms,sfu/canvas-lms,efrj/canvas-lms,utkarshx/canvas-lms,SwinburneOnline/canvas-lms,roxolan/canvas-lms,utkarshx/canvas-lms,tgroshon/canvas-lms,fronteerio/canvas-lms,wrdsb/canvas-lms,redconfetti/canvas-lms,whalejasmine/canvas-lms,juoni/canvas-lms,sfu/canvas-lms,efrj/canvas-lms,antoniuslin/canvas-lms,redconfetti/canvas-lms,SwinburneOnline/canvas-lms,venturehive/canvas-lms,tgroshon/canvas-lms,leftplusrightllc/canvas-lms,grahamb/canvas-lms,juoni/canvas-lms,shidao-fm/canvas-lms,kyroskoh/canvas-lms,grahamb/canvas-lms,kyroskoh/canvas-lms,antoniuslin/canvas-lms,juoni/canvas-lms,skmezanul/canvas-lms,jay3126/canvas-lms,sdeleon28/canvas-lms,Jyaasa/canvas-lms,kyroskoh/canvas-lms,ShreniiNepal/shrenii_lmp,skmezanul/canvas-lms,Rvor/canvas-lms,djbender/canvas-lms,skmezanul/canvas-lms,SwinburneOnline/canvas-lms,whalejasmine/canvas-lms,shidao-fm/canvas-lms,sfu/canvas-lms,greyhwndz/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,venturehive/canvas-lms,sfu/canvas-lms