Addition of The Page object class files for Tags and Test class files for the Tags components

I have Added Three Files and made minor changes in two other existing files, in the Pages folder I have added Two Page Class file 
1) TagEditPage.php
2) TagManagerPage.php

These two files contains the complete Page Object info for the edit and Manger Page for the Tag components in the CMS.

I have added one Test class file in the tests folder, file name is TagManager0001Test.php which contains the the test cases for Adding a new file and a simple GUI test.