made sure all posts other than first post contained within a public blog have isPublic attribute set to 1
moved code needed to determine editability of individual posts within a blog to post class, function is called but accuracy is untested as I need to access a blog from a user that is not the author, and it currently isn't possible. also changed home page, so that registration and login forms are not shown once logged in.
Merge branch '0.3' of github.com:CST8218-BlogShare/TestRepo into 0.3