project: rename load/unload in activate/deactivate

Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net>
project: enable activate/deactivate callbacks

Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net>
project: use activate callback for APO

Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net>
project: make atitle project activate aware

Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net>