issue style change

public/css/gogs.css

@@ -1001,6 +1001,11 @@ html, body {
 
 /* issue */
 
+#issue-create-form .avatar {
+    width: 50px;
+    height: 50px;
+}
+
 #issue-create-form .panel-body {
     padding: 15px 0 0 0;
 }