v1.0: Improvements to be more and more flexible

  - Add a "clone" starter
  Allows to clone a git directory to create a new vhost

  - Support for custom tasks
  Now, you can put a tasks/main.yml in the folder configuration/yours

  - File dependency check
  You can define a list of files required for the provisioning
  (could be used to check a binary exists, or simply files like DB dumps)

  - Vhosts accepts now an optional rootDir option
  It's the Apache vhost DocumentRoot option, now can be different from Directory

  - Vhost default template now include logs path
  1 for access, 1 for errors (combined)

  - Remove ctags from default packages
  (Was used by my VIm config but no more needed.)

  - Disable playbook.retry
  Boring to remove this each time...

Bugfixes

  - Empty vhost directory detection
  Now consider a dir without files but with folders not empty