IE doesn't redirect to login page when user is not logged in

[VicDeo]

Description

send html response when the client says any content-type is acceptable

Motivation and Context

0. IE 11 is set as a default browser
1. ownCloud User on Windows clicks on ownCloud private permalink (included in e.g. email)

Expected behavior

IE opens and login page is presented

Actual behavior

IE opens and user receives download dialog to download a file of 43 bytes (which is the uid of the user)
User needs to change URL to point to ../login.php and authenticate there

How Has This Been Tested?

Not tested yet

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Database schema changes (next release will require increase of minor version instead of patch)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests only (no source changes)

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation ticket raised:

[codecov]

Codecov Report

Merging #36079 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #36079   +/-   ##
=======================================
  Coverage      54%      54%           
=======================================
  Files          63       63           
  Lines        7403     7403           
  Branches     1308     1308           
=======================================
  Hits         3998     3998           
  Misses       3019     3019           
  Partials      386      386

Flag	Coverage Δ
#javascript	54% <ø> (ø)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 0856f5c...4f77216. Read the comment docs.

[PVince81]

👍