Update jsonrpc dependencies and rewrite dapps to futures. (#6522)

* Bump version.

* Fix RPC crate.

* Fix BoxFuture in crates.

* Compiles and passes tests!

* Get rid of .boxed()

* Fixing issues with the UI.

* Remove minihttp. Support threads.

* Reimplement files serving to do it in chunks.

* Increase chunk size.

* Remove some unecessary copying.

* Fix tests.

* Fix stratum warning and ipfs todo.

* Switch to proper branch of jsonrpc.

* Update Cargo.lock.

* Update docs.

* Include dapps-glue in workspace.

* fixed merge artifacts

* Fix test compilation.

dapps/js-glue/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 description = "Base Package for all Parity built-in dapps"
 name = "parity-dapps-glue"
-version = "1.7.0"
+version = "1.8.0"
 license = "GPL-3.0"
 authors = ["Parity Technologies <admin@parity.io>"]
 build = "build.rs"
@@ -12,7 +12,7 @@ syntex = { version = "0.58", optional = true }
 
 [dependencies]
 glob = { version = "0.2.11" }
-mime_guess = { version = "1.6.1" }
+mime_guess = { version = "2.0.0-alpha.2" }
 aster = { version = "0.41", default-features = false }
 quasi = { version = "0.32", default-features = false }
 quasi_macros = { version = "0.32", optional = true }