add DialogLogin
update app icon.
login verifying is not finished.
refactoring Control, add AppControl and StudentsManagementControl.
ready to finnish login verification.
tracking AppControl.cpp now.
update app icon
add User and Users.
bugs in serialization.
add some temp code for project examing.
need remove after examed.
remove unittest for serialization.
update bmp file's path in .rc file
derived User from CObject successfully.
add Users to AppControl.
implement login verification.