Implemented notifications history. Defined notification amount managment by notification system itself.

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>
Moved death watch setting to globals.h. Defined 0.5s deathWatch pause on Darwin (development) systems.

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>
Defined PoC for notifications manager.

Signed-off-by: Daniel (dmilith) Dettlaff <dmilith@verknowsys.com>