Login screen always says password incorrect irrespective of login error.

[KaairaGupta]

Login error can be:

1. Password incorrect
2. Username not-found
3. Network error

Current app (built from develop) rightly handles the third error but always says "This password is incorrect." even if username was not found.

I understand this can be privacy breach to tell if username was found or not, so I would like to have to get your input @dewall about how we should approach this issue. Also, we may need to change the server response if we use the information of existence of a username.

Simplest solution could be to simply show message: "Username or password was incorrect.".

I would like to work on this issue myself.