* fixed double 'the'
mostly 's/the the /the /', little style changes where 'is' or 'to' was missing
* removed duplicate words
removed duplicate words like 'to to', 'you you' or 'account account' etc.
a batch of pizza-toasts burnt for this.
* Add asterisk_mbox documentation
* Bad filename
* Capitalization error
* Update documentation based on changes to the mailbox implementation
* Typos as per review
* Remove mailbox sensor, since the functionality is included in the mailbox component. Added ha_version to each file since the code has now been merged.
