[fix] #1092 Merge branch '1.5' into dev

app/lib/blockchain/DuniterBlockchain.ts

app/lib/blockchain/Switcher.ts

app/lib/computation/BlockchainContext.ts

app/lib/computation/QuickSync.ts

app/modules/prover/lib/permanentProver.ts

app/service/BlockchainService.ts

gui/index.html

package.json

release/arch/debian/package/DEBIAN/control

release/arch/windows/duniter.iss

test/dal/triming.js

test/fast/fork-resolution-3-3.ts

test/integration/branches.js