Allow emtpy values on personal page and fix saving checkmark position

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

settings/css/settings.css

@@ -586,6 +586,9 @@ span.version {
 	margin-bottom: 8px;
 	display: inline;
 }
+form.section {
+	position: relative;
+}
 .followupsection {
 	display: block;
 	padding: 0 30px 30px 30px;

settings/js/federationsettingsview.js

@@ -83,7 +83,7 @@
 				if (field === 'avatar') {
 					return;
 				}
-				self.$('#' + field).keyUpDelayedOrEnter(_.bind(self._onInputChanged, self));
+				self.$('#' + field).keyUpDelayedOrEnter(_.bind(self._onInputChanged, self), true);
 			});
 		},