Rename user

We renamed Uploadwizardtest user to Selenium_user a long time ago, but
looks like we forgot to rename it here.

When Uploadwizardtest logs in, login page opens. When Selenium_user logs in, main page opens.

Change-Id: Iafe4f95dbbc1da5294c7de9f5c479dec7ae6e7aa
Merge "Rename user"