The Authentication GUI has been added
Added the Databsase management class etc
Introduced the package-by-feature package structure
Another edition
Fixed popping up the dialog window, added the registering module (signup package)
The following functionalities have been added:
Checking whether username and email exist
The following responsibilites have been added: checking whether username and email exist
Final commit
Merge branch 'master' of https://github.com/wjoz/addressbook