Added methods to sign in and out of django admin panel, as well as toggle waffle flags Everyone attribute

Right now I've added a method that will take in a waffle flag name and the setting it is to be toggled to ('Yes', 'No', 'Unknown') It will log into the admin panel, change the flag, then log out. This is in relation to #86 and #87. Would this be sufficient? Any suggestions would be helpful. I know I added a lot of locators to the base file...but I've tested it with oauth_login flag and it consistently works.