ivy: Better C-h in counsel-find-file-map
ivy: Better C-h in counsel-find-file-map

Use new function counsel-up-directory which keeps track of the directory
you left.

Also add way to get to C-h through C-S-h.

tsonntag/dotemacs,tsonntag/dotemacs,tsonntag/dotemacs,tsonntag/dotemacs