Fix/connection with email (#1917)

* #1916 Load user by email - insensitive query

* Revert "Case insensitive login"

This reverts commit c1521ca3d757bee91f7dfbb15b3717162bf4997d.

* #1916 Load user - insensitive query for username and sensitive for email

* #1916 Unit test for insensitive username login && documentation

1 files changed, 1 insertions, 1 deletions

diff --git a/client/src/app/core/auth/auth.service.ts b/client/src/app/core/auth/auth.service.ts
index 4fc04a05c..eaa822e0f 100644
--- a/client/src/app/core/auth/auth.service.ts
+++ b/client/src/app/core/auth/auth.service.ts
@@ -153,7 +153,7 @@ export class AuthService {
       response_type: 'code',
       grant_type: 'password',
       scope: 'upload',
-      username: username.toLowerCase(),
+      username,
       password
     }