v2.0.0-rc1

The main features available in B2SHARE2 RC1 are:
- based on Invenio v3
- user login using the staging B2ACCESS server
- records lifecycle: creation and editing of drafts, publishing them
- fast record search
- PID for each public record
- simple authorisation system: the record owners can edit/publish records; the published records' metadata is publicly available; record files are readable only if the record is published and marked as open access.
- support for custom metadata templates for each community
- OAI-PMH support with DC and MarcXML metadata formats

New important features (relative to v1):
- a clearly defined record lifecycle
- integration of B2DROP: easily put files from B2DROP into a draft record
- better general user experience

Notably missing features compared to v1 (coming in the next RCs):
- comments and reviews for datasets
- 'report abuse' and 'request access to private record' functions
- the license selector UI control
- HTTP API for creating, editing and publishing records
- embargo date is currently ignored

Work in progress features (to be released in the following RCs):
- DOIs for published records
- PIDs and checksums for files
- user interface and HTTP APIs for managing user communities and their metadata
- file download statistics
- community administrators and community member roles for finer grained access control
- some custom UI controls for editing records:
- selection of scientific disciplines
- selection of language
- UI and HTTP API for navigating record versions
- easy local installations (with Docker)