Remove unused (and broken) helper group declaration.
Cleaned up tabs from <helper> node.
Update model group to standard magento convention. Moved setUniversalVariable event to only run in the ‘frontend’ context instead of global.
Clean up ACL configuration, move into adminhtml.xml
Remove block creation in observer method as it is not necessary
Rename block group to universal_variable_main
Update layout update XML to use new block group name and add type hint to template.
Merge pull request #32 from Sevenly/master

Refactor Code to be more in line with Magento coding practices