- added some fift scripts for the config change proposal voting
- added validator-engine-console support for the config change proposal voting
- additional sanity checks in catchain
- unsafe slow catchain resync method
1. update liteclient/liteserver. Now liteserver sends signatures of
blocks and liteclient checks them. I.e. liteclient completely checks
received data.
2. validator-engine: more GC options
3. blockchain-explorer: show all block transactions (instead of 256)
4. some bugfixes