Some small fixes to button disabled on load.

app/src/components/Controls/Sidebar.js

@@ -152,6 +152,7 @@ const Sidebar = (props) =>
 				<Fab
 					aria-label='Mute mic'
 					className={classes.fab}
+					disabled={!me.canSendMic || me.audioInProgress}
 					color={micState === 'on' ? 'default' : 'secondary'}
 					size={smallScreen ? 'large' : 'medium'}
 					onClick={() =>
@@ -172,6 +173,7 @@ const Sidebar = (props) =>
 				<Fab
 					aria-label='Mute video'
 					className={classes.fab}
+					disabled={!me.canSendWebcam || me.webcamInProgress}
 					color={webcamState === 'on' ? 'default' : 'secondary'}
 					size={smallScreen ? 'large' : 'medium'}
 					onClick={() =>

app/src/components/Settings/Settings.js

@@ -107,7 +107,7 @@ const Settings = ({
 						name='Camera'
 						autoWidth
 						className={classes.selectEmpty}
-						disabled={webcams.length === 0}
+						disabled={webcams.length === 0 || me.webcamInProgress}
 					>
 						{ webcams.map((webcam, index) =>
 						{
@@ -138,7 +138,7 @@ const Settings = ({
 						name='Audio device'
 						autoWidth
 						className={classes.selectEmpty}
-						disabled={audioDevices.length === 0}
+						disabled={audioDevices.length === 0 || me.audioInProgress}
 					>
 						{ audioDevices.map((audio, index) =>
 						{