Mark preloaded entries as read when marking all as read. Fixes feedbin/support#402.
Mark preloaded entries as read when marking all as read. Fixes feedbin/support#402.

saitodisse/feedbin,fearenales/feedbin,azukiapp/feedbin,fearenales/feedbin,fearenales/feedbin,nota-ja/feedbin,feedbin/feedbin,saitodisse/feedbin,feedbin/feedbin,brendanlong/feedbin,saitodisse/feedbin,azukiapp/feedbin,azukiapp/feedbin,nota-ja/feedbin,brendanlong/feedbin,feedbin/feedbin,feedbin/feedbin,nota-ja/feedbin,brendanlong/feedbin