cubicweb-blog #7794111 py3k compatibility [validation pending]

prioritynormal
typebug
done in1.11.1
load0.500
load left0.000
closed by#5926af2f084e [py3k] Replace 'unicode' with 'cubicweb._' (closes #7794111)
patch[py3k] Replace 'unicode' with 'cubicweb._' (closes #7794111) [applied][py3k] unbound methods (related to #7794111) [applied][py3k] print function (related to #7794111) [applied]