Fixed config.xml strings
Added TODO: create expiration form field
Fixed $$globals to $GLOBALS[$global]
Created create() methods and implemented subj/observer pattern for test & variant models
Fixed double loading by ignoring favicon.ico
Added get/post to $allowed for testing purposes
Added update option, but need to modify to allow new variants
Removed win column from tests; instead storing winner var_id in expired column
changed update() to reactTo(), so variant model can link with test model RESTfully. Also this is more semantically appropriate