SliderInput now uses original yii SliderAsset asset again
New widget CollapsablePanel (rewrite of the original Collapse widget, see https://github.com/yiisoft/yii2/issues/1459)
Use Html::resetButton
Composer.lock needs to be versioned in git - otherwise we cannot guarantee prod work!
Change from multiline /** @var to single line /* @var php doc comments to ensure code completion in netbeans works
Provide default value for field name
Added BootstrapThemeAsset
Form not really used - added comment
Fixed  Translation
Complete rewrite of management part; public viewing barred; fixes issue #9 , fixes issue #7