added username and email functionality for posts :Q
# Please enter the commit message for your changes. Lines starting
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# On branch Posts
# Changes to be committed:
#	new file:   model.zip
#	modified:   model/database.php
#	modified:   model/post.php
#	modified:   model/post_db.php
#	new file:   view_posts.zip
#	modified:   view_posts/index.php
#	new file:   view_posts/main.css
#	modified:   view_posts/post_add.php
#	modified:   view_posts/post_list.php
#
