Merge pull request #59 from datadryad/trello-9-dataonemn

Fix DataOneMN Tier 1 API Issues
duplicate identifiers
Increase available database connections.

The database was running out of connections, so this was
increased. Other DSpace users have reported setting this value as high
as 600. Also increased the timeout for obtaining a new connection.
Merge pull request #60 from datadryad/db-connections

Increase available database connections.
Merge pull request #61 from datadryad/atmire-1291

duplicate identifiers
Merge branch 'dryad-master' into dryad-dev