Miner holds it's own copy of spec/engine

Apps listing API & Home webapp.

Conflicts:
	ethcore/src/client/client.rs
	ethcore/src/client/mod.rs
	ethcore/src/client/test_client.rs
	miner/src/miner.rs

* easily configurable vm (in progress)

* completely removed vm_factory from engine

* --jitvm command line flag

Make Ethash::extra_info() work.
Seal fields now decode the RLP.

Fixing some warnings

fixed incorrect decoding of header seal_fields. added tests. #1090

Bumping Clippy

Injectable topbar support.

New syncing part 1: Block collection

Conflicts:
	webapp/src/apps.rs
	webapp/src/page/mod.rs
	webapp/src/proxypac.rs
	webapp/src/router/mod.rs

Conflicts:
	ethcore/build.rs

Moving all Client public API types to separate mod & binary serialization codegen for that mod (#1051)

* transaction moved

* trash remove

* ids move

* receipt

* tree-route

* blockchain info

* log_entry move

* trace filter moved

* executed & trace moved

* localized trace moved

* block status moved

* build scripts and codegen refs

* Cargo.lock update

* binary for blockstatus, blockchaininfo

* binary for trace

* trace filters binary ser

* binary for log entries & executed

* binary for receipt

* special case for u8 & transaction binary attribute

* resolved remaining issues & error binary serialization

* json-tests util import

* fix warnings

* ids attr

* add missing attributes

* Update build.rs

* Proxy.pac serving

* Subdomains router for dapps

* Proper handling of prefixed and non-prefixed apps

* Changing dapps domain to parity

Fix uncle getter