fixed mistypes and errors
number of threads increased to 20
changed naming `pattern` renamed to `index`, `urlfilter` renamed to `filter`
documentIndexer is now @Autowired, DocumentIndexer#transformations is now final
changed comment
gnutch.quartz.* scheduler package added
gnutch.quartz.* tests added
quartz dependency added
Added SchedulerService and components
SchedulerService added, support for gn:schedule added, stackoverflow.xsl scheduled to be crawled once per two weeks
iframe.patch applied, now we extract links //a/@href|//iframe/@src links