dont force valid email address on mobile login, fixes: #CNVS-2306
dont force valid email address on mobile login, fixes: #CNVS-2306

test plan:
on an android in the mobile chrome browser go to log into canvas
try to log in with a non-email username (for example, mine is 'ryan')
make sure it lets you log in.

right now it errors because we add "type=email" to
the input to get the nice email-hinted keyboard entry.
but by doing so, it will also use native validatation
to make sure it is a valid email, adding "novalidate"
to the <form> fixes it

Change-Id: Ie3215100d07a932508c366dac147d59502696c8e
Reviewed-on: https://gerrit.instructure.com/16175
QA-Review: Mark Suman <965242380eeefd51c596c8c7b6f9f6ebd77faa86@instructure.com>
Reviewed-by: Ryan Florence <2d8900489f91ac272fd9ce9d5789db6522668ca2@instructure.com>
Tested-by: Jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@instructure.com>

nditech/red-innovadores-lms,samuels410/greatlakes-lms,djbender/canvas-lms,Jyaasa/canvas-lms,whalejasmine/canvas-lms,usmschuck/canvas,sfu/canvas-lms,sdeleon28/canvas-lms,usmschuck/canvas,skmezanul/canvas-lms,va7map/canvas-lms,kyroskoh/canvas-lms,fronteerio/canvas-lms,sdeleon28/canvas-lms,shidao-fm/canvas-lms,skmezanul/canvas-lms,HotChalk/canvas-lms,wimemx/Canvas,djbender/canvas-lms,rup/Tarrax,wye0220/shindig-canvas,arrivu/jigsaw-lms,leftplusrightllc/canvas-lms,redconfetti/canvas-lms,antoniuslin/canvas-lms,skmezanul/canvas-lms,rup/Tarrax,Unow/canvas-lms,venturehive/canvas-lms,tgroshon/canvas-lms,parbros/red-innovadores-lms,venturehive/canvas-lms,utkarshx/canvas-lms,sfu/canvas-lms,kyroskoh/canvas-lms,greyhwndz/canvas-lms,HotChalk/canvas-lms,SwinburneOnline/canvas-lms,Unow/canvas-lms,sfu/canvas-lms,juoni/canvas-lms,tgroshon/canvas-lms,sli7246/canvas_branch,Rvor/canvas-lms,rup/Tarrax,redconfetti/canvas-lms,djbender/canvas-lms,grahamb/canvas-lms,wye0220/shindig-canvas,sfu/canvas-lms,jay3126/canvas-lms,Rvor/canvas-lms,kyroskoh/canvas-lms,Jyaasa/canvas-lms,whalejasmine/canvas-lms,va7map/canvas-lms,Unow/canvas-lms,roxolan/canvas-lms,loganrun/pincan,sfu/canvas-lms,wrdsb/canvas-lms,merichar/canvas-lms,landonwilkins/canvas-lms,venturehive/canvas-lms,HotChalk/canvas-lms,roxolan/canvas-lms,arrivu/jigsaw-lms,Jyaasa/canvas-lms,ShreniiNepal/shrenii_lmp,ShreniiNepal/shrenii_lmp,ShreniiNepal/shrenii_lmp,tgroshon/canvas-lms,leftplusrightllc/canvas-lms,jay3126/canvas-lms,merichar/canvas-lms,merichar/canvas-lms,efrj/canvas-lms,wrdsb/canvas-lms,parbros/red-innovadores-lms,arrivu/arrivu-lms,usmschuck/canvas,sfu/canvas-lms,Unow/ins,sli7246/canvas_branch,kyroskoh/canvas-lms,juoni/canvas-lms,greyhwndz/canvas-lms,SwinburneOnline/canvas-lms,sfu/canvas-lms,grahamb/canvas-lms,roxolan/canvas-lms,grahamb/canvas-lms,tgroshon/canvas-lms,antoniuslin/canvas-lms,arrivu/hoodemo,leftplusrightllc/canvas-lms,shidao-fm/canvas-lms,jay3126/canvas-lms,sdeleon28/canvas-lms,Rvor/canvas-lms,samuels410/greatlakes-lms,sdeleon28/canvas-lms,samuels410/greatlakes-lms,utkarshx/canvas-lms,arrivu/arrivu-lms,fronteerio/canvas-lms,va7map/canvas-lms,antoniuslin/canvas-lms,wrdsb/canvas-lms,arrivu/qibla-ecampus,djbender/canvas-lms,whalejasmine/canvas-lms,shidao-fm/canvas-lms,juoni/canvas-lms,efrj/canvas-lms,venturehive/canvas-lms,wye0220/shindig-canvas,jay3126/canvas-lms,Unow/ins,antoniuslin/canvas-lms,whalejasmine/canvas-lms,samuels410/greatlakes-lms,grahamb/canvas-lms,SwinburneOnline/canvas-lms,fronteerio/canvas-lms,utkarshx/canvas-lms,landonwilkins/canvas-lms,grahamb/canvas-lms,greyhwndz/canvas-lms,landonwilkins/canvas-lms,usmschuck/canvas,Jyaasa/canvas-lms,skmezanul/canvas-lms,arrivu/arrivu-lms,wimemx/Canvas,arrivu/hoodemo,juoni/canvas-lms,HotChalk/canvas-lms,Unow/ins,ShreniiNepal/shrenii_lmp,shidao-fm/canvas-lms,leftplusrightllc/canvas-lms,efrj/canvas-lms,redconfetti/canvas-lms,nditech/red-innovadores-lms,arrivu/qibla-ecampus,parbros/red-innovadores-lms,nditech/red-innovadores-lms,wrdsb/canvas-lms,arrivu/jigsaw-lms,Rvor/canvas-lms,greyhwndz/canvas-lms,loganrun/pincan,redconfetti/canvas-lms,arrivu/qibla-ecampus,fronteerio/canvas-lms,arrivu/hoodemo,SwinburneOnline/canvas-lms,loganrun/pincan,sli7246/canvas_branch,efrj/canvas-lms,utkarshx/canvas-lms,nditech/red-innovadores-lms,landonwilkins/canvas-lms,wimemx/Canvas,roxolan/canvas-lms,va7map/canvas-lms