Enforce sort order in includes/if/else blocks

Add support to the `PropertySortOrder` linter to enforce property sort
order in `@include` and `@if`/`@else` blocks.

Change-Id: Ia03f911fb4c940b2d7847859bc5cd8ea74a9efce
Reviewed-on: http://gerrit.causes.com/41277
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane.dasilva@brigade.com>
Update changelog

Change-Id: I8f988581f5aaee4e79e884325655d4252ff30f9d
Reviewed-on: http://gerrit.causes.com/41278
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane.dasilva@brigade.com>