* signer: remove local path disclosure from extapi
* signer: show more data in cli ui
* rpc: make http server forward UA and Origin via Context
* signer, clef/core: ui changes + display UA and Origin
* signer: cliui - indicate less trust in remote headers, see https://github.com/ethereum/go-ethereum/issues/17637
* signer: prevent possibility swap KV-entries in aes_gcm storage, fixes#17635
* signer: remove ecrecover from external API
* signer,clef: default reject instead of warn + valideate new passwords. fixes#17632 and #17631
* signer: check calldata length even if no ABI signature is present
* signer: fix failing testcase
* clef: remove account import from external api
* signer: allow space in passwords, improve error messsage
* signer/storage: fix typos
ToECDSAPub was unsafe because it returned a non-nil key with nil X, Y in
case of invalid input. This change replaces ToECDSAPub with
UnmarshalPubkey across the codebase.