all-v1.15.3

What's Changed

• refactor hub by @sgueissa in #1781
• Work be1 stuart create architecture package by @sgueissa in #1782
• Add challenge_request and challenge message JSON schemas by @1florentin in #1804
• draft authentication protocol federation by @arnauds5 in #1801
• First parts of UI for the federation project on FE2 by @quadcopterman in #1810
• Adapt the JSON Schema of the federation result message by @1florentin in #1832
• Add karate UI tests social by @4xiom5 in #1840
• change signature of readRumor for more intuitive by @DanielTavaresA in #1844
• Work fe1 ljankoschek notification page by @ljankoschek in #1829
• Add validator for rumor by @DanielTavaresA in #1852
• Add final json schemas & fix failing go test by @1florentin in #1846
• Federation Authentication protocol documentation by @onsriahi14 in #1842
• Federation authentication protocol by @quadcopterman in #1837
• [BE2]: Scala Linter base + first 5 rules by @t1b00 in #1819
• [BE2] Fix multiple connectTo messages upon changing the server-peers-list.conf file. by @onsriahi14 in #1823
• Add rumor handler by @DanielTavaresA in #1843
• Karate UI Digital Cash Tests by @4xiom5 in #1854
• Fix #1775 Digital Cash Warning: RollCallId not defined by @4xiom5 in #1856
• [BE1] Refactor and Database by @sgueissa @emonnin-epfl in #1815
• [be1] Fix connexion problem by @sgueissa in #1859

Full Changelog: all-v1.15.2...all-v1.15.3