SLING-3573 - Local resources which are no longer present in the
repository are not deleted when importing

Typo fix in HasFileMatcher

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1630599 13f79535-47bb-0310-9956-ffa450edef68
SLING-3573 - Local resources which are no longer present in the
repository are not deleted when importing

Clarify javadoc and remove TODOs in Filter, VltFilter

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1630600 13f79535-47bb-0310-9956-ffa450edef68