D-Net

PRIVATE: In the message for the graph remove the "by the end of December 2019"

PRIVATE: update the link to the blog https://www.openaire.eu/blogs/the-openaire-research-graph

PRIVATE: updated citation suggestion and MAG reference

PRIVATE : updated docs about dumps and changed end of consultation to the end of December

PRIVATE added link to zenodo community

PRIVATE we can produce dumps also for content providers (data sources)

PRIVATE Preparing for public consultation of the OpenAIRE Research Graph. Added doc page for dumps. All pages updated with: 1. menu item to the dump page; 2. alert message of the public consultation; 3. updated message about the schema change

PRIVATE : update footer links, add grant id

PRIVATE : Fix menu items in changelog.html

PRIVATE : updated changelist and add a comment in README_BEFORE_COMMITTING.txt about fixing menuitems