Phase 2 starter code

[blchelle]

Description

On running the program, the following should happen

1. Read/Validate the command-line parameters for the port number. -> #4
2. A connection should be established to the database at the port number specified as the command-line parameter.
3. Show a menu with the following options 'Login with uid', 'Login Anonymously', 'Exit'.
   4a. If you choose 'Login with uid', prompt for a uid.
   4b. Store the users uid in the program and show a menu with the options 'Post a Question', 'Search for Questions', 'Log out'
   5a. If you choose 'Login anonymously', then store None as the users uid in the program and show a menu with the options 'Post a Question', 'Search for Questions', 'Log out'.
   6a. If you choose 'Exit', terminate the program.

[Archit-13]

done