remove unsafety from util/hash.rs and util/bigint/uint.rs

Fixing CORS settings for special values: * & null.

JSONRPC test strings avoid using \ char

* Splitting RPC Apis into more fine-grained sets

* Remove old code/comment.

* Add test for VMTrace ser.

* Add StateDiff ser test.

Bumping Dapps & TopBar to newest version.

* pattern importing

* tests for import

* cli options for account import

* [options] for import also

* removed globbing

* removed glob crate refs

* add TrieError, refactor Trie DB creation

* remove Result type alias due to glob import conflicts

* fix fallout in state.rs

* add debug, display impl for TrieError

* fix fallout in account.rs

* ethcore::Error::TrieError variant

* fix remaining fallout in ethcore crate

* added From<TrieError> impl for Error, removed map_err calls

* fix test breakages

* fix doc tests

* update docs

[ci skip]

* API to check if signer is enabled

* Fixing compilation warnings

* Avoid removing transactions when trying to confirm and the password is invalid

* Fix order

* Initial implementation of AuthCodeStore for SystemUIs

* SystemUIs authorization

* Renaming SystemUI -> SignerUI

* Fixing clippy warnings

* Lowering time threshold

* Bumping sysui

* Fixing test

StateDiff and VMTrace uses serde preprocessor.

Removing compilation warnings

Allowing connections only from chrome-extension and self-hosted client

Clippy bump & fixing warnings