ticket_581: bugs solved
minor update
ticket 583: wrong order to citation fields for citation histogram
Merge pull request #183 from ehenneken/ticket_583

ticket 583: wrong order to citation fields for citation histogram
Merge pull request #182 from ehenneken/ticket_581

Ticket 581: fix for couple of metrics bugs
Merge pull request #145 from rahuldave/master

Library and group email invites (plus lots of related and unrelated fixes)
* improved mongo backup/restore shell.py tasks
* move shell.py managers into package and use auto-discovery to load
Merge pull request #185 from lbjay/shell-managers

* improved mongo backup/restore shell.py tasks
added files