introduce a factory method in VirutlaArrayIterator
*8431* Fix announcement form locale selectors
Use filter in interest queries (apply patch in lib/pkp)
*8254* Introduced metrics table
*8254* Introduced metrics related locale keys
*8254* Introduced file loader base task class
*8254* Move code to find bots to core and make the bot file a parameter
*8254* Let usage events plugin hooks being called after download
*8254* Fixed setting hooks
*8254* Moved code to retrieve path components to core
*8254* Fixed router testing
*8254* Introduced method to check file existence
*8254* Introduced condition parameter for notes
*8254* Introduced label option to extras on demand widget
*8449* Fixed ISBNdb plugin self-identification strings
*8453* Fixed mailing list unsubscribe missing token
*4259* Allow modification of announcement date posted
*8272* Corrections to es_ES locale
*8460* Updates to da_DK locale
*8226* Updates to it_IT countries list