Fix #256 fork window size was still set to zero

app/controllers/node.js

app/lib/entity/configuration.js

app/lib/sync.js

app/service/BlockchainService.js

bin/ucoind

server.js

test/integration/branches.js

test/integration/branches2.js

test/integration/branches_pending_data.js

test/integration/branches_revert.js

test/integration/branches_revert2.js

test/integration/branches_switch.js

test/integration/identity-test.js

test/integration/peerings.js

test/integration/start_generate_blocks.js

test/integration/tests.js