[NX-19] Implement basic loggers view

Signed-off-by: Alin Dreghiciu <adreghiciu@gmail.com>
[NX-19] Add prototype methods to container/component similar to Extjs4

Signed-off-by: Alin Dreghiciu <adreghiciu@gmail.com>
[NX-19] Add loggers rest resource (for now keeping loggers in a hashmap)

Signed-off-by: Alin Dreghiciu <adreghiciu@gmail.com>
[NX-19] Implement logging UI a la Extjs4

Signed-off-by: Alin Dreghiciu <adreghiciu@gmail.com>