fixed issue if a model name is passed to Fuel_modules that is an array syntax with the key being the advanced module folder it belongs to and the value being the name of the model
fixed issue where you couldn't close modal window after uploading
added check to make sure the module permission exists before adding it in the Fuel_permissions::create_simple_module_permissions method
added permissions tree view
changed admin javascript to be in the footer and removed unused fuel_bottom block