move getUnindexed from Indexer to Status class
update search_lucene to use new jobs api
- uses batch updates because filesystem hooks don't provide file ids
- also refactored most of the static access code to new & instance method calls
fix indexing via cron
increase version to 0.6.0 to indicate new background scanning approach
readd doIndexFile as a deprecated method to prevent errors in case old jobs are still in the jobqueue
add standalone optimize job, use fileid as unique id in lucene index, prune old index documents in optimize job
change code to be accessible from tests
add status and searchresult tests