v0.5

[SDBELGA-149] Use sign off as avatar
[SDBELGA-173] Search 360 archive (without the advanced search)
[SDBELGA-197] Add custom buttons in the authoring topbar
[SDBELGA-193] Add support for related text items in Belga NewsMl output
Fix publish error if no subject schema
[SDBELGA-198] Multilingual CV for countries
[SDBELGA-202] Update Ingest mapping from AFP, ANP, TASS, EFE, ATS, KYODO, DPA