feat: Better UI for flag creation

assets/create.html

@@ -5,6 +5,9 @@
 <div class="form-group">
 	<input type="text" class="form-control" name="content" value="{{ content }}">
 </div>
+<label>
+	<small>User id for whom the flag is for</small>
+</label>
 <div class="form-group">
 	<input type="text" class="form-control" name="user id" value="{{ data }}">
 </div>