Improved permission checks.

core/settingsform.cpp

@@ -6,6 +6,8 @@
 #include "iplugin.h"
 #include "iform.h"
 
+#include <QMessageBox>
+
 SettingsForm::SettingsForm(QWidget *parent) :
     QDialog(parent),
     ui(new Ui::SettingsForm)
@@ -39,6 +41,12 @@ void SettingsForm::on_buttonBox_accepted()
 
 void SettingsForm::accept()
 {
+    if (!Context::instance().currentUser()->isAdmin())
+    {
+        QMessageBox::critical(this, tr("Permission denied"), tr("You don't have permission to save settings."));
+        return;
+    }
+
     for (int i = 0; i < ui->tabWidget->count(); i++)
     {
         IForm *tab = qobject_cast<IForm*>(ui->tabWidget->widget(i));