Revert "remove respimg plugin and add unload plugin"
Revert "remove respimg plugin and add unload plugin"

This reverts commit f3fd6164a86c2ac25ee4156ee0adb232403d1856.

JRF-tw/sunshine.jrf.org.tw,JRF-tw/sunshine.jrf.org.tw,JRF-tw/sunshine.jrf.org.tw