Adjust screenshoting

Signed-off-by: Joas Schilling <coding@schilljs.com>

README.md

@@ -2,7 +2,7 @@
 
 **A video & audio conferencing app for Nextcloud**
 
-![](https://raw.githubusercontent.com/nextcloud/spreed/master/docs/call-in-action.png)
+![](https://raw.githubusercontent.com/nextcloud/spreed/master/docs/call-in-action.jpg)
 
 ## Why is this so awesome?
 

appinfo/info.xml

@@ -42,7 +42,7 @@ And in the works for the [coming versions](https://github.com/nextcloud/spreed/m
 	<bugs>https://github.com/nextcloud/spreed/issues</bugs>
 	<repository>https://github.com/nextcloud/spreed.git</repository>
 
-	<screenshot>https://raw.githubusercontent.com/nextcloud/spreed/master/docs/call-in-action.png</screenshot>
+	<screenshot>https://raw.githubusercontent.com/nextcloud/spreed/master/docs/call-in-action.jpg</screenshot>
 	<screenshot>https://raw.githubusercontent.com/nextcloud/spreed/master/docs/chat.png</screenshot>
 	<screenshot>https://raw.githubusercontent.com/nextcloud/spreed/master/docs/file-darg-and-drop.png</screenshot>
 	<screenshot>https://raw.githubusercontent.com/nextcloud/spreed/master/docs/screensharing.png</screenshot>

src/components/CallView/Grid/Grid.vue

@@ -545,23 +545,23 @@ export default {
 		placeholderName(i) {
 			switch (i) {
 			case 0:
-				return 'Sandra'
+				return 'Sandra McKinney'
 			case 1:
-				return 'Chris'
+				return 'Chris Wurst'
 			case 2:
-				return 'Edeltraut'
+				return 'Edeltraut Bobb'
 			case 3:
-				return 'Arthur'
+				return 'Arthur Blitz'
 			case 4:
-				return 'Roeland'
+				return 'Roeland Douma'
 			case 5:
-				return 'Vanessa'
+				return 'Vanessa Steg'
 			case 6:
-				return 'Emily'
+				return 'Emily Grant'
 			case 7:
-				return 'Tobias'
+				return 'Tobias Kaminsky'
 			case 8:
-				return 'Vincent'
+				return 'Adrian Ada'
 			}
 		},