Add gui option for history max items and size to database settings widget.

src/core/Metadata.cpp

@@ -31,8 +31,8 @@ Metadata::Metadata(Database* parent)
     m_recycleBinEnabled = true;
     m_masterKeyChangeRec = -1;
     m_masterKeyChangeForce = -1;
-    m_historyMaxItems = 10;
-    m_historyMaxSize = 6291456;
+    m_historyMaxItems = defaultHistoryMaxItems;
+    m_historyMaxSize = defaultHistoryMaxSize;
 
     QDateTime now = Tools::currentDateTimeUtc();
     m_nameChanged = now;
@@ -52,6 +52,9 @@ Metadata::Metadata(Database* parent)
     m_updateDatetime = true;
 }
 
+const int Metadata::defaultHistoryMaxItems = 10;
+const int Metadata::defaultHistoryMaxSize = 6291456;
+
 template <class P, class V> bool Metadata::set(P& property, const V& value)
 {
     if (property != value) {

src/core/Metadata.h

@@ -69,6 +69,9 @@ public:
     int historyMaxSize() const;
     QHash<QString, QString> customFields() const;
 
+    static const int defaultHistoryMaxItems;
+    static const int defaultHistoryMaxSize;
+
     void setGenerator(const QString& value);
     void setName(const QString& value);
     void setNameChanged(const QDateTime& value);