Added pool_recycle to create_engine. Added logic to add shelves.

index.html

@@ -7,6 +7,9 @@
         <button>Submit</button>
     </form>
     <form action="http://127.0.0.1:8000/checkin" method="POST">
+        <label for="locationid">Location<br></label>
+        <input name="locationid" id="location" value=" ">
+        <br>
         <label for="isbn">Add Book<br></label>
         <input name="isbn" id="isbn" value=" ">
     <button>Submit</button>
@@ -14,6 +17,14 @@
     <form action="http://127.0.0.1:8000/getbooks/1" method="GET">
         <button>Get Books</button>
     </form>
+
+        <form action="http://127.0.0.1:8000/AddLocation" method="POST">
+        <label for="BookCase">Bookcase</label>
+        <input name="BookCase" id="Bookcase" value=" "><br>
+        <label for="Shelf">Shelf</label>
+        <input name="Shelf" id="Shelf" value=" ">
+        <button>Submit</button>
+    </form>
 </div>
 
 <div>