rpc: various fixes/enhancements

rpc: be less restrictive on the request id
rpc: improved documentation
console: upgrade web3.js to version 0.16.0
rpc: cache http connections
rpc: rename wsDomains parameter to wsOrigins

cmd/geth/js.go

@@ -237,7 +237,7 @@ func (js *jsre) apiBindings() error {
 	}
 
 	// load only supported API's in javascript runtime
-	shortcuts := "var eth = web3.eth; "
+	shortcuts := "var eth = web3.eth; var personal = web3.personal; "
 	for _, apiName := range apiNames {
 		if apiName == "web3" || apiName == "rpc" {
 			continue // manually mapped or ignore

cmd/geth/main.go

@@ -326,7 +326,7 @@ JavaScript API. See https://github.com/ethereum/go-ethereum/wiki/Javascipt-Conso
 		utils.WSListenAddrFlag,
 		utils.WSPortFlag,
 		utils.WSApiFlag,
-		utils.WSAllowedDomainsFlag,
+		utils.WSAllowedOriginsFlag,
 		utils.IPCDisabledFlag,
 		utils.IPCApiFlag,
 		utils.IPCPathFlag,

cmd/geth/usage.go

@@ -94,7 +94,7 @@ var AppHelpFlagGroups = []flagGroup{
 			utils.WSListenAddrFlag,
 			utils.WSPortFlag,
 			utils.WSApiFlag,
-			utils.WSAllowedDomainsFlag,
+			utils.WSAllowedOriginsFlag,
 			utils.IPCDisabledFlag,
 			utils.IPCApiFlag,
 			utils.IPCPathFlag,