fixed pending transactions

Fixing clippy warnings

correct signature of SecTrieDB::raw_mut

&mut T is invariant over its type parameter, so we need to specify the trait's lifetime explicitly rather than coerce it to the elided lifetime

* Bumping clippy. Fixing warnings

* Removing unused import

* Fixing complexity and arguments warning on two functions

* Display progress when importing

* Additional polish.

* Fix strange yielding behaviour.

* Allow colour to be disabled.

Fixed #1135

* simple db migration

* make migration slightly more functional

* migration version is just a single unsigned integer

* Fix --geth IPC for MacOS.

* fix pending_* methods in MinerService, add pending_receipts

* pending logs

* include pending logs when polling

* fixed returning pending logs multiple timees

* log type

* transactionHash is supplied to pending logs

* miner returns receipts together with hashes

* bring back miners all_transactions used by sync module

* Add info message for mined block.

* Coloured, padding logging.

* Remove superfluous logs.

* Use better term colour module.

* Basic hex block exporting.

* Export formats and to file.

* First bits.

* Block importing.

* Fix error text.

* Wait for queue to empty before shutting down after import.

Have `die_with_error` use `fmt::Display` rather than Debug

Exporting

Sign and send transaction

Fixing unused imports warnings

Fix styling - don't mix spaces with tabs!!!

* Add `SecretStore::unlock_account_temp` function.

* Test for relocking accounts.

* Avoid importing keys into wrong place.

- Now a `--no-import-keys` option;
- `--testnet` now alters the import location for keys and the store path.

Fixes #1112 and #1089.

* Avoid double-bools.