--- a/src/main.cpp	Tue May 08 00:44:17 2018 +0300
+++ b/src/main.cpp	Tue May 08 13:14:29 2018 +0300
@@ -14,7 +14,7 @@
 #include "ui_mainwindow.h"
 #include "ui_aboutwindow.h"
 #include "runguard.h"
-
+#include "util.h"
 
 
 //
@@ -56,103 +56,6 @@
 
 
 //
-// Convert QString to a double value, replacing comma
-//
-double slMoneyStrToValue(const QString &str)
-{
-    QString str2 = str;
-    return str2.replace(",", ".").toDouble();
-}
-
-
-//
-// Convert double value to formatted QString
-//
-QString slMoneyValueToStr(double val)
-{
-    return QStringLiteral("%1").arg(val, 1, 'f', 2);
-}
-
-
-QString slMoneyValueToStrSign(double val)
-{
-    return QStringLiteral("%1%2").
-        arg(val > 0 ? "+" : "").
-        arg(val, 1, 'f', 2);
-}
-
-
-//
-// Trim and cleanup given QString (removing double whitespace etc.)
-//
-QString slCleanupStr(const QString &str)
-{
-    return str.simplified().trimmed();
-}
-
-
-//
-// Manipulate given QDateTime value to get desired
-// correct timestamp.
-//
-const QDateTime slDateTimeToLocal(const QDateTime &val)
-{
-    QDateTime tmp = val;
-    tmp.setOffsetFromUtc(0);
-    return tmp.toLocalTime();
-}
-
-
-//
-// Return a string representation of given QDateTime
-// converted to local time.
-//
-const QString slDateTimeToStr(const QDateTime &val)
-{
-    return slDateTimeToLocal(val).toString(QStringLiteral("yyyy-MM-dd hh:mm"));
-}
-
-
-//
-// Error logging
-//
-void slLog(const QString &mtype, const QString &msg)
-{
-    QString filename = settings.dataPath + QDir::separator() + APP_LOG_FILE;
-    QFile fh(filename);
-    if (fh.open(QIODevice::WriteOnly | QIODevice::Append | QIODevice::Text))
-    {
-        QTextStream out(&fh);
-        out <<
-            slDateTimeToLocal(QDateTime::currentDateTimeUtc()).
-            toString(QStringLiteral("yyyy-MM-dd hh:mm:ss"))
-            << " [" << mtype << "]: " << msg << "\n";
-        fh.close();
-    }
-}
-
-
-//
-// Display an error dialog with given title and message
-//
-int slErrorMsg(const QString &title, const QString &msg)
-{
-    QMessageBox dlg;
-
-    slLog("ERROR", msg);
-
-    dlg.setText(title);
-    dlg.setInformativeText(msg);
-    dlg.setTextFormat(Qt::RichText);
-    dlg.setIcon(QMessageBox::Critical);
-    dlg.setStandardButtons(QMessageBox::Ok);
-    dlg.setDefaultButton(QMessageBox::Ok);
-
-    return dlg.exec();
-}
-
-
-//
 // Check if an SQL error has occured (for given QSqlError) and
 // report it to stdout if so. Return "false" if error has occured,
 // true otherwise.