[NX-19] Down function should return first found component (as in Extjs 4)

Signed-off-by: Alin Dreghiciu <adreghiciu@gmail.com>
[NX-19] Add support for searching by id while going up

Signed-off-by: Alin Dreghiciu <adreghiciu@gmail.com>
[NX-19] Rename up/down param to "selector"

Signed-off-by: Alin Dreghiciu <adreghiciu@gmail.com>
[NX-19] Select name after adding a new logger

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