Fixed Config's `resource_macros_names` definition.
Fixed Config's `resource_macros_names` definition.

The `resource_macros_names` in the `Config` class was declared as
`StringProp`, but this attribute is a list object. This mislead the
multi valued attribute processing that returned the last list element
rather than the list itself.

Also removed the last uncecessary [] on the `_echo` command definition.

gst/alignak,ddurieux/alignak,fpeyre/shinken,Simage/shinken,h4wkmoon/shinken,xorpaul/shinken,ddurieux/alignak,tal-nino/shinken,fpeyre/shinken,h4wkmoon/shinken,geektophe/shinken,KerkhoffTechnologies/shinken,tal-nino/shinken,staute/shinken_deb,fpeyre/shinken,Simage/shinken,titilambert/alignak,h4wkmoon/shinken,mohierf/shinken,titilambert/alignak,rledisez/shinken,dfranco/shinken,dfranco/shinken,rledisez/shinken,staute/shinken_package,staute/shinken_deb,claneys/shinken,xorpaul/shinken,peeyush-tm/shinken,rednach/krill,tal-nino/shinken,lets-software/shinken,naparuba/shinken,lets-software/shinken,KerkhoffTechnologies/shinken,kaji-project/shinken,naparuba/shinken,rledisez/shinken,claneys/shinken,h4wkmoon/shinken,rednach/krill,savoirfairelinux/shinken,staute/shinken_deb,ddurieux/alignak,kaji-project/shinken,xorpaul/shinken,fpeyre/shinken,Aimage/shinken,xorpaul/shinken,claneys/shinken,Simage/shinken,KerkhoffTechnologies/shinken,h4wkmoon/shinken,naparuba/shinken,rednach/krill,Aimage/shinken,mohierf/shinken,dfranco/shinken,ddurieux/alignak,Simage/shinken,dfranco/shinken,mohierf/shinken,dfranco/shinken,lets-software/shinken,kaji-project/shinken,claneys/shinken,kaji-project/shinken,KerkhoffTechnologies/shinken,peeyush-tm/shinken,Aimage/shinken,Aimage/shinken,kaji-project/shinken,geektophe/shinken,xorpaul/shinken,Simage/shinken,kaji-project/shinken,xorpaul/shinken,lets-software/shinken,geektophe/shinken,fpeyre/shinken,geektophe/shinken,staute/shinken_package,mohierf/shinken,staute/shinken_package,KerkhoffTechnologies/shinken,Simage/shinken,peeyush-tm/shinken,lets-software/shinken,h4wkmoon/shinken,rednach/krill,savoirfairelinux/shinken,staute/shinken_deb,staute/shinken_package,gst/alignak,gst/alignak,savoirfairelinux/shinken,tal-nino/shinken,tal-nino/shinken,tal-nino/shinken,Aimage/shinken,peeyush-tm/shinken,peeyush-tm/shinken,staute/shinken_package,xorpaul/shinken,savoirfairelinux/shinken,savoirfairelinux/shinken,rednach/krill,titilambert/alignak,h4wkmoon/shinken,titilambert/alignak,h4wkmoon/shinken,KerkhoffTechnologies/shinken,xorpaul/shinken,staute/shinken_package,rednach/krill,rledisez/shinken,claneys/shinken,savoirfairelinux/shinken,geektophe/shinken,ddurieux/alignak,claneys/shinken,gst/alignak,naparuba/shinken,kaji-project/shinken,lets-software/shinken,Alignak-monitoring/alignak,dfranco/shinken,mohierf/shinken,naparuba/shinken,staute/shinken_deb,ddurieux/alignak,staute/shinken_deb,geektophe/shinken,peeyush-tm/shinken,rledisez/shinken,Aimage/shinken,Alignak-monitoring/alignak,rledisez/shinken,mohierf/shinken,fpeyre/shinken,naparuba/shinken