user/settings: fix cannot change profile for non-local users (#4313)

templates/user/settings/profile.tmpl

@@ -14,7 +14,7 @@
 						{{.CsrfTokenHtml}}
 						<div class="required field {{if .Err_Name}}error{{end}}">
 							<label for="username">{{.i18n.Tr "username"}}<span class="text red hide" id="name-change-prompt"> {{.i18n.Tr "settings.change_username_prompt"}}</span></label>
-							<input id="username" name="name" value="{{.SignedUser.Name}}" data-name="{{.SignedUser.Name}}" autofocus required {{if not .SignedUser.IsLocal}}disabled{{end}}>
+							<input id="username" name="name" value="{{.SignedUser.Name}}" data-name="{{.SignedUser.Name}}" autofocus required {{if not .SignedUser.IsLocal}}readonly{{end}}>
 							{{if not .SignedUser.IsLocal}}
 							<p class="help text blue">{{$.i18n.Tr "settings.password_username_disabled"}}</p>
 							{{end}}