Moved some parts to a static lib so both the executable and the tests can link to it.

Written additional tests.

src/util.h

@@ -1,6 +1,7 @@
 #ifndef UTIL_H
 #define UTIL_H
 
+#include <string>
 #include <QString>
 #include <QTableView>
 
@@ -9,6 +10,23 @@ void copySelectionToClipboard(const QTableView *view);
 QString ConvertToMultiLineCString(const QString &in);
 void exportTable(const QTableView *view, QTextStream &out);
 
+inline QString stdStrToQ(const std::string &s)
+{
+	return QString::fromUtf8(s.c_str());
+}
+
+inline std::string qStrToStd(const QString &s)
+{
+	return std::string(s.toUtf8().data());
+}
+
+inline std::string qvarToStdStr(const QVariant &c)
+{
+	return qStrToStd(c.toString());
+}
+
+
+
 namespace std {
 
   template <>