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/src/page/mod.rs

@@ -15,11 +15,9 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 
-mod builtin;
-mod local;
+pub mod builtin;
+pub mod local;
 mod handler;
 
-pub use self::local::LocalPageEndpoint;
-pub use self::builtin::PageEndpoint;
-pub use self::handler::{PageCache, PageHandlerWaiting};
+pub use self::handler::PageCache;