Calculate subdomain length fix.
Close #116 - force removal of www subdomain.

fix a problem that isn't there in the first place.

See notes on Github.
Remove unsigned IDs. Closes #115.
Add required files and test file for #113.
Add unit tests
Fix #113, all tests pass
Add delete and check method tests
Implement delete and exists functions.
Switch to Session object, for #113.
Remove PhpUnit output
Add PhpUnit* to .gitignore
Merge branch 'master' into 87-Blog-PageTool