Allow use from relative path

There are in fact two changes:
1. Allow the blog to be in a relative path - as opposed to the root directory.
2. The path referencing system didn't work on my server - not sure why. So changed all access references from:
index.php/edit/apost
to:
index.php?edit=apost
Merge pull request #1 from CarlJacobs/master

Allow use from relative path