1. Added initial data for Category in WebDB_Script.sql. 2. Modified board controller. 3. Modified board view to display boards as thumbnails.
Added Database/evolutions/ directory to store all database evolutions that
will occur during development.

	ev1.sql: changes tbl_tack::tackURL to tbl_tack::tackContent
Intermediate checkin: basic tack functionality in-place.
Build PHPUnit tests
Build PHPUnit Tests
Login, create new user form, password recovery, change password update
Tacklr Document, Update Profile
Merge branch 'sprint6/vinh' of github.com:mytacks/mytacks into mergeattempt/sprint6/vinh

Conflicts:
	tacklr/.idea/sqldialects.xml
	tacklr/.idea/tacklr.iml
	tacklr/.idea/workspace.xml
	tacklr/css/user_tack.css
	tacklr/protected/config/main.php
	tacklr/protected/controllers/BoardController.php
	tacklr/protected/controllers/TackController.php
	tacklr/protected/controllers/UserController.php
	tacklr/protected/models/RecoveryForm.php
	tacklr/protected/models/Tack.php
	tacklr/protected/views/board/_form.php
	tacklr/protected/views/board/index.php
	tacklr/protected/views/board/view.php
	tacklr/protected/views/layouts/main.php
	tacklr/protected/views/site/login.php
	tacklr/protected/views/tack/_form.php
	tacklr/protected/views/user/_form.php
	tacklr/protected/views/user/changepassword.php
	tacklr/protected/views/user/recovery.php