Authentication testing

[harshasrikara]

Authentication

Subtask from #56

####### Detailed Test Cases

• Admin correct credentials logs admin in
• Admin valid user credentials for user without privelages fails to log user in
• Admin invalid credentials fails to log in
• User correct credentials logs user in
• User invalid credentials fails to log in
• User valid workshop name open up dashboard
• User invalid workshop name fails to open up dashboard

Invalid test cases for all the above should cause an alert to appear in the UI