less intrusive edit and delete buttons

As long as not hovered, the "edit" and "delete" buttons of one's own
posts are more blended with the background of the grey bar they reside
in.
Restoring the order in The Reich

It just looks better with the names in the recent activities (aka
"Home") are left aligned. Also some more spacing to the gravatar has to
be applied (10px is just a guess on the usual spacings...)