changes of ui in dropwon select opptions and bottun colours add

templates/add_ao.html

@@ -13,8 +13,15 @@
     <form id="ao" method="POST">
         <div class="form-group full-width inline-2">
             <div>
-                <label>Year:</label>
-                <select id="year" name="year" required></select>
+                <label>Assessment Year:</label>
+                <select id="year" name="year" required>
+                    <option value="" disabled selected>
+                        -- Please select Assessment Year --
+                    </option>
+                </select>
+
+
+
                 <div id="yearError" style="color:red; display:none; margin-bottom:10px;"></div>
             </div>
         </div>