my-gnus.el: formatted citation

Change-Id: I263e6b8e1acaa10374ce60209d37d2eb62275a6c
my-gnus.el: fix bug with citation location switchery

Change-Id: I3658f5a0a2a62aadf46487b08914ea425e334ee9
my-gnus.el: (setq gnus-thread-hide-subtree t)

Change-Id: Ia12b5a14f4ced1a583d3aa58148222fe39a442fb