Improved EditBundle command

* if you got a valid git repo address, it will be filled in the
  appropriate position in the new bundle config buffer.
Recreated 'color_toy' with new template.
Lazy load 'Renamer' untill ':Renamer' is invoked.
New config 'light_no_color_stuff'
Assgined \st to :Gstatus from 'fugitive'.
Fixed wrong nameing of 'vim_wiki'.
Enable 'vim_wiki' in config 'light'.