[beta] Backports (#8346)

* Warp-only sync with warp-barrier [blocknumber] flag. (#8228)

* Warp-only sync with warp-after [blocknumber] flag.

* Fix tests.

* Fix configuration tests.

* Rename to warp barrier.

* Allow unsafe js eval on Parity Wallet. (#8204)

* Update musicoin spec in line with gmc v2.6.2 (#8242)

* Supress TemporaryInvalid verification failures. (#8256)

* Include suicided accounts in state diff (#8297)

* Include suicided accounts in state diff

* Shorten form match -> if let

* Test suicide trace diff in State

* replace_home for password_files, reserved_peers and log_file (#8324)

* replace_home for password_files, reserved_peers and log_file

* typo: arg_log_file is Option

* Enable UI by default, but only display info page.

* Fix test.

* Fix naming and remove old todo.

* Change "wallet" with "browser UI"

dapps/src/page/builtin.rs

@@ -75,6 +75,11 @@ impl<T: WebApp + 'static> Dapp<T> {
 			fallback_to_index_html: false,
 		}
 	}
+
+	/// Allow the dapp to use `unsafe-eval` to run JS.
+	pub fn allow_js_eval(&mut self) {
+		self.info.allow_js_eval = Some(true);
+	}
 }
 
 impl<T: WebApp> Endpoint for Dapp<T> {