Merge pull request #490 from mwoodiupui/dspace-4_x

[DS-1795] When run command dspace "dspace stat-initial"
Merge pull request #491 from mwoodiupui/dspace-4_x

[DS-1750] Remove DSpace manual PDF from the source kit.
[maven-release-plugin] prepare release dspace-4.1
[maven-release-plugin] prepare for next development iteration