Clock off adjust + Prominent repeater name

Fixes #14 (I hope)

static/index.html

@@ -59,7 +59,10 @@
 				<div class="flex">
 					<div class="mdl-card mdl-shadow--4dp input-methods">
 						<div class="mdl-card__title">
-							<h2 class="mdl-card__title-text">Input</h2>
+							<h2 class="mdl-card__title-text">
+								<span id="repeater"></span>
+								Repeater
+							</h2>
 							<div id="recv">
 								<!-- This div appears as a little light that turns on when someone's sending -->
 								<i class="material-icons" id="muted">volume_off</i>
@@ -370,10 +373,10 @@
 									</tr>
 									<tr>
 										<td>
-											Repeater:
+											Your clock is off by:
 										</td>
 										<td>
-											<span id="repeater"></span>
+											<output id="clock-off-value">??</output>ms
 										</td>
 									</tr>
 								</tbody>

static/vail.css

@@ -101,6 +101,11 @@ img {
 	max-height: inherit;
 }
 
+#repeater {
+	font-style: italic;
+	margin-right: 0.3em;
+}
+
 #recv {
 	width: 3em;
 	height: 2em;

static/vail.js

@@ -291,7 +291,7 @@ class Vail {
 		this.sent = []
 		this.lagTimes = [0]
 		this.rxDurations = [0]
-		this.clockOffset = null // How badly our clock is off of the server's
+		this.clockOffset = 0 // How badly our clock is off of the server's
 		this.rxDelay = 0 // Milliseconds to add to incoming timestamps
 		this.beginTxTime = null // Time when we began transmitting
 
@@ -440,6 +440,7 @@ class Vail {
 		this.updateReading("#lag-value", avgLag.toFixed())
 		this.updateReading("#longest-rx-value", longestRx)
 		this.updateReading("#suggested-delay-value", suggestedDelay.toFixed())
+		this.updateReading("#clock-off-value", this.clockOffset)
 	}
 
 	addLagReading(duration) {
@@ -459,7 +460,7 @@ class Vail {
 	}
 
 	wsSend(time, duration) {
-		let msg = [time, duration]
+		let msg = [time + this.clockOffset, duration]
 		let jmsg = JSON.stringify(msg)
 		this.socket.send(jmsg)
 		this.sent.push(jmsg)
@@ -482,9 +483,9 @@ class Vail {
 		// Server is telling us the current time
 		if (durations.length == 0) {
 			let offset = now - beginTxTime
-			console.log("Our clock ahead of server by", offset, "ms")
+			if (this.clockOffset == 0) {
-			if (this.clockOffset === null) {
 				this.clockOffset = offset
+				this.updateReadings()
 			}
 			return
 		}