Added functional test for user login using Selenium 2
Modified LoginTest
Added Functional test for user signup
Added php-webdriver library
Added Survey Answer unit tests.
Added more unit test for Survey Response. Also updated the existing to match the current models.
Added more Survey Creator tests. Also updated existing to match current models.
Added more Survey Question tests. Also updated existing to match current models.
Added more Survey model tests. Also updated existing to match current models.
Updated test scripts (can pass login account and password)
Added comment
Updated LoginTest.php
Added SurveyTest.php (for other branches)
Changed default url (based on design branch)
Merge branch 'design' into Unit-Testing

Conflicts:
	mySurvey_app/protected/models/SurveyAnswer.php
Merge branch 'design' into Unit-Testing

Conflicts:
	mySurvey_app/protected/models/SurveyAnswer.php
Updated test cases
Updated test cases
Added PhpDocumentor classes and files.
Merge branch 'Unit-Testing'