Implemented application login.

Minor UI improvement.
Fixed memory leaks.

core/users/userform.cpp

@@ -5,9 +5,9 @@
 #include <QHeaderView>
 #include "../data/core-data.h"
 #include "../service.h"
+#include "../permissionservice.h"
 #include "../emptystringvalidator.h"
 #include "../samestringvalidator.h"
-#include <QCryptographicHash>
 
 UserForm::UserForm(QWidget *parent) :
     AutoForm<User>(parent),
@@ -69,8 +69,9 @@ bool UserForm::bindOtherToData()
             this->entity()->addRole(srv.loadById(ui->tableWidget->item(i,0)->data(Qt::UserRole).toInt()));
         }
     }
+    PermissionService permService;
     if (m_passChanged){
-        this->entity()->setPassword(QString(QCryptographicHash::hash(ui->password->text().toUtf8(),QCryptographicHash::Sha256).toBase64()));
+        this->entity()->setPassword(permService.encryptPassword(ui->password->text()));
     }
     return true;
 }