in user_publish activity the button retry connection is added
in the user_publish,user_landing and DBList activities the url has been
added to the connection problem toast message.
The importDB button has been made invisible and the take a test button
first takes the user to DBList page and then to the authenticate page.
The PHP codes are also modified.
Merge branch 'User' of https://github.com/bazookan/Quiz_app.git into User
Forgot to add the additional PHP Codes...