NOISSUE put legacy FTB support in a namespace, fix its base URL

api/logic/modplatform/ftb/FtbPrivatePackManager.cpp

@@ -1,37 +0,0 @@
-#include "FtbPrivatePackManager.h"
-
-#include <QDebug>
-
-#include "FileSystem.h"
-
-void FtbPrivatePackManager::load()
-{
-    try
-    {
-        currentPacks = QString::fromUtf8(FS::read(m_filename)).split('\n', QString::SkipEmptyParts).toSet();
-        dirty = false;
-    }
-    catch(...)
-    {
-        currentPacks = {};
-        qWarning() << "Failed to read third party FTB pack codes from" << m_filename;
-    }
-}
-
-void FtbPrivatePackManager::save() const
-{
-    if(!dirty)
-    {
-        return;
-    }
-    try
-    {
-        QStringList list = currentPacks.toList();
-        FS::write(m_filename, list.join('\n').toUtf8());
-        dirty = false;
-    }
-    catch(...)
-    {
-        qWarning() << "Failed to write third party FTB pack codes to" << m_filename;
-    }
-}