Felt wrong since the variable is named birth_message not birth_message*s*
Tried it and it doesn't work, throws error
This config
```
mqtt:
birth_message:
- topic: 'hass/status'
payload: 'online'
- topic: 'homeassistant/status'
payload: 'online'
will_message:
- topic: 'hass/status'
payload: 'offline'
- topic: 'homeassistant/status'
payload: 'offline'
```
Gave this error:
```
Logger: homeassistant.components.hassio
Source: components/hassio/__init__.py:420
Integration: Hass.io (documentation, issues)
First occurred: 9:44:55 AM (2 occurrences)
Last logged: 9:48:29 AM
Invalid config for [mqtt]: expected a dictionary for dictionary value @ data['mqtt']['birth_message']. Got [OrderedDict([('topic', 'hass/status'), ('payload', 'maaan')]), OrderedDict([('topic', 'homeassistant/status'), ('payload', 'maaan-boy')])] expected a dictionary for dictionary value @ data['mqtt']['will_message']. Got [OrderedDict([('topic', 'hass/status'), ('payload', 'womaaan')]), OrderedDict([('topic', 'homeassistant/status'), ('payload', 'womaaan-girl')])]. (See /config/configuration.yaml, line 6).
Invalid config for [mqtt]: expected a dictionary for dictionary value @ data['mqtt']['birth_message']. Got [OrderedDict([('topic', 'hass/status'), ('payload', 'online')]), OrderedDict([('topic', 'homeassistant/status'), ('payload', 'online')])] expected a dictionary for dictionary value @ data['mqtt']['will_message']. Got [OrderedDict([('topic', 'hass/status'), ('payload', 'offline')]), OrderedDict([('topic', 'homeassistant/status'), ('payload', 'offline')])]. (See /config/configuration.yaml, line 6).
```
* Sets front matter defaults
* Removes default front matter from section templates/pages
* Removes default front matter from addon pages
* Removes default front matter from integration pages
* Removes default front matter from posts
* Removes default front matter from docs pages
* Removes default front matter from other pages
* Fixes blog category pages
