* several changes to Manual Alarm panel doc
took out the double underscores in the sensor.date_time templates
changed the data field to data_template field where applicable (since the messages use the template)
commented out the initial_state: 'on', since that is no longer required
provided 1 example using multi-line notation
* Update manual.markdown
all agreed and changed
* 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
* Automatically create linkable headers
* Visually improve position of linkable header chain icon
* Do not auto link headers on homepage
* Remove linkable_title everywhere
* 🚑 Re-instante linkable_title plugin as NOOP
