Context Navigation

Changes between Initial Version and Version 1 of Ticket #4082, comment 5

initial	v1
1	1	Something like this would get rid of the range query, though it still needs extra code for when the receiver is the player entity directly: http://pastebin.com/9460Khhn
2	2
3		It's also completely untested and most likely broken.
	3	It's also completely untested and most likely broken. It serves mostly as an example to start from (f.e. it minimises the global message listeners by letting the AuraManager listen to it (most aura entities don't have a global aura so wouldn't need the listener anyway)).