Don't fail on missing DocumentRoot

If the DocumentRoot value wasn't set, applying the state would cause the
following error:

          ID: site.example.com-documentroot
    Function: file.directory
        Name: None
      Result: False
     Comment: Specified file None is not an absolute path
     Started: 15:07:05.596723
    Duration: 4.929 ms
     Changes:

This fixes the problem by not trying to check for the DocumentRoot directory is
the value is missing.

Update standard.sls

Make sure that you can makedirs incase parent folders are not created

Create vhost DocumentRoot directory

Create the vhost DocumentRoot directory if it does not exist

Add optional templating to register_site files

Add optional templating for the register site aspect of a pillar.

User can specify keys to be included as defaults, otherwise it is
treated as a normal managed file.

Issue#41 configure multi proxypass configuration in vhost
Thank you!

This is more reliable than version numbers which might change with point
releases (in particular for Debian Jessie) and is more likely to not
conflict between multiple OS.

Fix case where state != enabled causes error

When using the register_site state, if the `state` for the
site in the apache pillar did not equal "enabled" the error

```
Cannot extend ID 'a2ensite <name>' in 'base:apache.register_site'. It is not part of the high state.
```

If statements were there to build out the `a2ensite` or `a2dissite` ID
appropiately, but the next state for managing the config always
assumed that the `a2ensite` id would be there.

Addressed by making a Jinja variable that will be the appropiate ID,
probably could use a better name.

Added basic opensuse support

Update map.jinja

Fix typo: `user_require` -> `use_require`

They no longer are dependencies of this formula.

Add templates 'redirect.tmpl' and 'proxy.tmpl'.

updated map.jinja debian 8.0 settings

Fix mod-php5 dependency when setting php.ini

Add ability to specify modules in pillar

Fix Apache 2.4 and add support for Ubuntu 14.10

Replace require_all with use_require in map.jinja, we want to be able
to use custom Require values.

Remove uneeded Directory in standard.tmpl and add conditional and
default value for Require.

Fix bad filenames in standard.sls

Adding support for Apache 2.4 on Ubuntu 14.04

- Adding confext to virtualhost names.
- Renaming the default config file for Ubuntu (000-default.conf).
- Adding ability to use "Require all granted".

fixed things seth mentioned in class

This reverts commit f7b14ec169.

Don't execute a2ensite if the vhost is already enabled

Fix link to instructions

The link to the installation and usage instructions does not work. This fixes it.

The structure of this example file was quite confusing. Most of these
values are not required and should be denoted as such. Jinja notiation
to denote re-used Pillar values was also a bad and confusing choice.

Closes #8

Having multiple different examples in the same file was causing
confusion.

Fix typo

Fixes #22