UI: factory: parse <Widget/> element syntax for definitions
UI: factory: parse <Widget/> element syntax for definitions

* Partially revert "tmpl:define" syntax from commit 6230b78cd2fd008bdafdfedbbe6f7cb8a4bac11c

tim-janik/rapicorn,tim-janik/rapicorn,tim-janik/rapicorn,tim-janik/rapicorn,tim-janik/rapicorn