trigger event to check if something is selectable
frontoffice controller result defaults to array to be able to merge it with $this->_result formed by $this->assign() calls
fixed: parent::offsetGet in top-level class
fx_template_essence interface for something which can add essence meta to template output and provide variable meta for certain vars
changed format of compiled template file - readable name goes first for easier finding proper file "by hands"
default value for in-att replacement
form: comment for fields, radio set, delegation field props meta retrieval to assigned essence
fork & load methods to create collections with the same meta (finder & sortable props for now)
do not generate hooks for field modifications if the owning component is not std