Merge branch 'lh/plain'

* lh/plain:
  Supply status description to html_status()
  ui-tree: link to plain view instead of blob view
  Implement plain view

diff --cc Makefile
Simple merge

diff --cc cgit.h
Simple merge

diff --cc cmd.c
Simple merge

diff --cc ui-shared.c
Simple merge

diff --cc ui-shared.h
Simple merge