Add captcha support to OpenID based signup

templates/user/auth/signup_openid_register.tmpl

@@ -20,6 +20,16 @@
 						<label for="email">{{.i18n.Tr "email"}}</label>
 						<input id="email" name="email" type="email" value="{{.email}}" required>
 					</div>
+					{{if .EnableCaptcha}}
+						<div class="inline field">
+							<label></label>
+							{{.Captcha.CreateHtml}}
+						</div>
+						<div class="required inline field {{if .Err_Captcha}}error{{end}}">
+							<label for="captcha">{{.i18n.Tr "captcha"}}</label>
+							<input id="captcha" name="captcha" value="{{.captcha}}" autocomplete="off">
+						</div>
+					{{end}}
 					<div class="inline field">
 						<label for="openid">OpenID URI</label>
 						<input id="openid" value="{{ .OpenID }}" readonly>