* Splitting methods requiring signing into separate trait

* Single place where RPC apis are created.

* Separating eth_filter

* Separating eth_signing

* Stubs for Personal Signer methods

* Test for EthSigningQueueClient

* TransactionConfirmation API

* Exposing PersonalSigner API

* Defining ApiSets dependent on context

* Removing types

* Fixing default impl

* Fixing un-mocked tests

* Update signing_queue.rs

[ci skip]

* Removing unused import [ci skip]

Using ordered hashmap to keep the order of dapps on home screen

Disabling `ethcore` by default, adding x-frame-options header to dapps.

transaction count verifier tests

expunge x! and xx! from the codebase

Database service upgrade (from the ipc branch)