alias_by_node and alias_sub should not be mutually exclusive

[falkenbt]

if target[:alias_by_node]
graphite_target = "aliasByNode(#{graphite_target},#{target[:alias_by_node]})"
elsif target[:alias_sub_search]
graphite_target = "aliasSub(#{graphite_target},"#{target[:alias_sub_search]}","#{target[:alias_sub_replace]}")"

Is there a reason for this being if/elsif? In graphite you can use the two in combination.

[ripienaar]

if graphite allows it i guess we should do the same - wanna do a pull?