fix improper data validation on profile link url, refs #10876
fix improper data validation on profile link url, refs #10876

take off 255 character limit on the url link field, we migrated
the database to handle strings longer than 255 characters so this
limit is wrong

test plan:
  1. login as a admin and go to the default account
  2. click 'Settings on the left hand nav
  3. scroll down and click 'Enable Profiles' checkbox
  4. scroll up to the top and click on the user name link
  5. click 'Edit Profile'
  6. try to add a new link with a title that is longer than 255 characters
  7. try to add a url that is longer than 255 characters
  8. the title should not let you go over 255 characters and the url
     should be able to go over 255 characters without a DB error

Change-Id: Ia11803c14f175239be75e61f54ca2fb4deb65edc
Reviewed-on: https://gerrit.instructure.com/14098
Reviewed-by: Cody Cutrer <c4fe2b1d90ef8f2548c8aeabfa633434316f0305@instructure.com>
Tested-by: Jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@instructure.com>

grahamb/canvas-lms,whalejasmine/canvas-lms,djbender/canvas-lms,grahamb/canvas-lms,HotChalk/canvas-lms,arrivu/arrivu-lms,merichar/canvas-lms,va7map/canvas-lms,sfu/canvas-lms,kyroskoh/canvas-lms,greyhwndz/canvas-lms,loganrun/pincan,greyhwndz/canvas-lms,arrivu/hiring-site,skmezanul/canvas-lms,sdeleon28/canvas-lms,SwinburneOnline/canvas-lms,sli7246/canvas_branch,roxolan/canvas-lms,narigone/canvas,matematikk-mooc/canvas-lms,utkarshx/canvas-lms,efrj/canvas-lms,AndranikMarkosyan/lms,sli7246/canvas_branch,utkarshx/canvas-lms,ShreniiNepal/shrenii_lmp,redconfetti/canvas-lms,wrdsb/canvas-lms,Unow/ins,sfu/canvas-lms,arrivu/jigsaw-lms,leftplusrightllc/canvas-lms,sfu/canvas-lms,tgroshon/canvas-lms,Rvor/canvas-lms,loganrun/pincan,matematikk-mooc/canvas-lms,juoni/canvas-lms,shidao-fm/canvas-lms,fronteerio/canvas-lms,arrivu/hoodemo,Unow/ins,va7map/canvas-lms,Jyaasa/canvas-lms,HotChalk/canvas-lms,nditech/red-innovadores-lms,samuels410/greatlakes-lms,usmschuck/canvas,wye0220/shindig-canvas,merichar/canvas-lms,whalejasmine/canvas-lms,rup/Tarrax,Rvor/canvas-lms,eCNAP/CANVAS,ShreniiNepal/shrenii_lmp,djbender/canvas-lms,efrj/canvas-lms,greyhwndz/canvas-lms,snehakachroo1/LSI_replica,kyroskoh/canvas-lms,sdeleon28/canvas-lms,arrivu/hiring-site,grahamb/canvas-lms,usmschuck/canvas,fronteerio/canvas-lms,nditech/red-innovadores-lms,venturehive/canvas-lms,grahamb/canvas-lms,arrivu/arrivu-lms,dgynn/canvas-lms,redconfetti/canvas-lms,utkarshx/canvas-lms,eCNAP/CANVAS,antoniuslin/canvas-lms,eCNAP/CANVAS,dgynn/canvas-lms,narigone/canvas,rup/Tarrax,snehakachroo1/LSI_replica,fronteerio/canvas-lms,narigone/canvas,landonwilkins/canvas-lms,samuels410/greatlakes-lms,snehakachroo1/LSI_replica,skmezanul/canvas-lms,antoniuslin/canvas-lms,rup/Tarrax,SwinburneOnline/canvas-lms,wye0220/shindig-canvas,merichar/canvas-lms,HotChalk/canvas-lms,juoni/canvas-lms,ShreniiNepal/shrenii_lmp,sfu/canvas-lms,parbros/red-innovadores-lms,juoni/canvas-lms,landonwilkins/canvas-lms,matematikk-mooc/canvas-lms,arrivu/arrivu-lms,leftplusrightllc/canvas-lms,jay3126/canvas-lms,fronteerio/canvas-lms,redconfetti/canvas-lms,Unow/canvas-lms,instructure/canvas-lms,tgroshon/canvas-lms,HotChalk/canvas-lms,gbleydon/canvas-lms,AndranikMarkosyan/lms,tgroshon/canvas-lms,instructure/canvas-lms,snehakachroo1/LSI_replica,arrivu/qibla-ecampus,whalejasmine/canvas-lms,Unow/ins,gbleydon/canvas-lms,narigone/canvas,arrivu/hiring-site,gbleydon/canvas-lms,landonwilkins/canvas-lms,instructure/canvas-lms,sdeleon28/canvas-lms,roxolan/canvas-lms,instructure/canvas-lms,Rvor/canvas-lms,Unow/canvas-lms,sfu/canvas-lms,arrivu/jigsaw-lms,nditech/red-innovadores-lms,shidao-fm/canvas-lms,tgroshon/canvas-lms,Rvor/canvas-lms,antoniuslin/canvas-lms,loganrun/pincan,jay3126/canvas-lms,landonwilkins/canvas-lms,whalejasmine/canvas-lms,wye0220/shindig-canvas,eCNAP/CANVAS,utkarshx/canvas-lms,shidao-fm/canvas-lms,redconfetti/canvas-lms,matematikk-mooc/canvas-lms,parbros/red-innovadores-lms,antoniuslin/canvas-lms,instructure/canvas-lms,Jyaasa/canvas-lms,leftplusrightllc/canvas-lms,roxolan/canvas-lms,usmschuck/canvas,wrdsb/canvas-lms,shidao-fm/canvas-lms,ShreniiNepal/shrenii_lmp,Jyaasa/canvas-lms,skmezanul/canvas-lms,sdeleon28/canvas-lms,AndranikMarkosyan/lms,wrdsb/canvas-lms,venturehive/canvas-lms,grahamb/canvas-lms,usmschuck/canvas,arrivu/hoodemo,arrivu/hoodemo,wimemx/Canvas,jay3126/canvas-lms,nditech/red-innovadores-lms,arrivu/qibla-ecampus,dgynn/canvas-lms,va7map/canvas-lms,venturehive/canvas-lms,kyroskoh/canvas-lms,SwinburneOnline/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,arrivu/qibla-ecampus,Jyaasa/canvas-lms,efrj/canvas-lms,wimemx/Canvas,juoni/canvas-lms,venturehive/canvas-lms,djbender/canvas-lms,samuels410/greatlakes-lms,Unow/canvas-lms,va7map/canvas-lms,kyroskoh/canvas-lms,efrj/canvas-lms,wrdsb/canvas-lms,SwinburneOnline/canvas-lms,parbros/red-innovadores-lms,djbender/canvas-lms,jay3126/canvas-lms,AndranikMarkosyan/lms,sfu/canvas-lms,dgynn/canvas-lms,samuels410/greatlakes-lms,greyhwndz/canvas-lms,sli7246/canvas_branch,wimemx/Canvas,roxolan/canvas-lms,leftplusrightllc/canvas-lms,skmezanul/canvas-lms,sfu/canvas-lms,arrivu/jigsaw-lms