UI text: check capitalization and tooltips

Change-Id: I3686ac83e5fdc009b03e84ab3c7b24a052d119c4
Reviewed-on: http://codereview.qt.nokia.com/569
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>

src/plugins/vcsbase/vcsbasesubmiteditor.cpp

@@ -640,7 +640,7 @@ bool VCSBaseSubmitEditor::runSubmitMessageCheckScript(const QString &checkScript
         return false;
     }
     if (checkProcess.exitStatus() != QProcess::NormalExit) {
-        *errorMessage = tr("The check script '%1' crashed").
+        *errorMessage = tr("The check script '%1' crashed.").
                         arg(QDir::toNativeSeparators(checkScript));
         return false;
     }