Fix CSP for dapps that require eval. (#7867)

* Add allowJsEval to manifest.

* Enable 'unsafe-eval' if requested in manifest.

dapps/src/apps/app.rs

@@ -14,12 +14,10 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-use endpoint::EndpointInfo;
-
 #[derive(Debug, PartialEq, Clone, Serialize, Deserialize)]
 #[serde(deny_unknown_fields)]
 pub struct App {
-	pub id: String,
+	pub id: Option<String>,
 	pub name: String,
 	pub description: String,
 	pub version: String,
@@ -28,32 +26,14 @@ pub struct App {
 	pub icon_url: String,
 	#[serde(rename="localUrl")]
 	pub local_url: Option<String>,
+	#[serde(rename="allowJsEval")]
+	pub allow_js_eval: Option<bool>,
 }
 
 impl App {
-	/// Creates `App` instance from `EndpointInfo` and `id`.
-	pub fn from_info(id: &str, info: &EndpointInfo) -> Self {
-		App {
-			id: id.to_owned(),
-			name: info.name.to_owned(),
-			description: info.description.to_owned(),
-			version: info.version.to_owned(),
-			author: info.author.to_owned(),
-			icon_url: info.icon_url.to_owned(),
-			local_url: info.local_url.to_owned(),
-		}
-	}
-}
-
-impl Into<EndpointInfo> for App {
-	fn into(self) -> EndpointInfo {
-		EndpointInfo {
-			name: self.name,
-			description: self.description,
-			version: self.version,
-			author: self.author,
-			icon_url: self.icon_url,
-			local_url: self.local_url,
-		}
+	pub fn with_id(&self, id: &str) -> Self {
+		let mut app = self.clone();
+		app.id = Some(id.into());
+		app
 	}
 }