I10N: First translation fixes for 2.1

Fix README, some spelling errors, remove contractions,
exclamation marks, correct some plural forms, join split messages.
Add QCoreApplication::translate to non-Q_OBJECT-classes.
Fix some lupdate warnings about discarding meta-data (//:).

src/plugins/qt4projectmanager/qt-maemo/maemosettingswidget.cpp

@@ -481,7 +481,7 @@ void MaemoSettingsWidget::updatePortsWarningLabel()
         m_ui->portsWarningLabel->clear();
     } else {
         m_ui->portsWarningLabel->setText(QLatin1String("<font color=\"red\">")
-            + tr("You'll need at least one port!") + QLatin1String("</font>"));
+            + tr("You will need at least one port.") + QLatin1String("</font>"));
     }
 }