private void showChangesPerFactionToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (changelist_mode == ChangeListMode.FACTION)
            {
                return;
            }

            changelist_mode = ChangeListMode.FACTION;
            PopulateChangeBrowser();
        }
        private void showChangesPerCategoryToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (changelist_mode == ChangeListMode.CATEGORY)
            {
                return;
            }

            changelist_mode = ChangeListMode.CATEGORY;
            PopulateChangeBrowser();
        }