Experimental branch for v2 erc activation

[smk762]

Currently only set for BEP20 tokens. Still getting crashes during activation. In gdb this is one cause:

14 17:08:13, mm2_main::mm2::rpc::dispatcher:112] ERROR RPC error response: orderbook_rpc:250] BaseRelSameOrderbookTickersAndProtocols
[01:08:13] [debug] [mm2.service.cpp:1955] [1373632]: orderbook_answer: {
    "error": "BaseRelSameOrderbookTickersAndProtocols",
    "error_path": "orderbook_rpc",
    "error_trace": "orderbook_rpc:250]",
    "error_type": "BaseRelSameOrderbookTickersAndProtocols",
    "id": null,
    "mmrpc": "2.0"
}
[01:08:13] [error] [mm2.cpp:703] [1373632]: exception caught for rpc orderbook answer: {
    "error": "BaseRelSameOrderbookTickersAndProtocols",
    "error_path": "orderbook_rpc",
    "error_trace": "orderbook_rpc:250]",
    "error_type": "BaseRelSameOrderbookTickersAndProtocols",
    "id": null,
    "mmrpc": "2.0"
}, exception: [json.exception.out_of_range.403] key 'result' not found