FIX: TriggeredcompleteEntry uninitialised ivar
FIX: TriggeredcompleteEntry uninitialised ivar

TriggeredcompleteEntry had an event handler for KeyRelease that would
trigger before self.cycle had been created. Now calling
set_completion_list() in ctor to setup all instance variables so this
shouldn't happen.

yuuki0xff/nvpy,yuuki0xff/nvpy,khornberg/nvpy-gtk,n8henrie/nvpy,dwu/nvpy,trankmichael/nvpy,dwu/nvpy,bwillistower/nvpy