contint: retab to get rid of tabulations

Eventually got fed up of files mixing tabs and spaces for indentation,
retab all files to use spaces for consistency.

Also added vim modeline for templates/apache/localvhost.erb

Change-Id: Id4fc18fc7ca1fc823d985be8fefbbaa5b5f7fdf6
Merge "contint: retab to get rid of tabulations" into production