Added stuff for the blog main page

Session manager now checks to see if values already exist. Data access
has several functions to help with getting post ids, etc. Create blog
now has a link to the created blog and blog main persists the postID on
the command line which is referenced by $_GET["var"]
Merge branch 'master' of https://github.com/sqlmdxdude/WebProgrammingProject2

Conflicts:
	sessionManager.php