Revert "[maven-release-plugin] prepare for next development iteration"

This reverts commit b09146f9feb122fa7d6331e9f5eda8d30f7a8df2.
Revert "[maven-release-plugin] prepare release opensocial-explorer-0.0.1"

This reverts commit a28321927c55e9e71c993526fce840d24c51e804.