Rename SortedProperties to PropertySortOrder

The `SortedProperties` linter is an old name that doesn't match our
current convention of describing the "thing" the linter is checking.
Change it.

Change-Id: I4dbf168c68dd9b1cbd202aac8691f74fab959217
Reviewed-on: http://gerrit.causes.com/36072
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane@causes.com>