* Add actions to radio-widget, pass trhough all attributes and user parameters, fix label refresh
* invoke th-radio-hook instead of hardcoded variables
* simplify code and test it with a plugin hook
* remove hook
* sets checked ckass for radio widget wrapper
* added tc-radio as standard class for radio widgets
* removed selectedClass again, as suggested
@pmario ;-)
* allow radio widget to set an index in a data tiddler
* updated RadioWidget docs, with same demo macro as for CheckboxWidget
in #2103
* removed docs in widget code (seems the wrong place)
* added from version to docs
* revert doc maros to master
* using wikitext-example-without-html and .tip macro now
* fix quotes