added media selection widget, based on select2
Removed yii-application requirement

Setting up the application is handled by https://github.com/YASC/standards/blob/master/proposal/YASR-0-application-structure.md
Update composer.json
Merge pull request #3 from ametad/master

let path be configured absolutely
fixed deps
set browser-view as default action
updated views (headlines, buttons, breadcrumbs, texts)
fixed returnUrl handling
image header bug fixed
Merge pull request #6 from tschlich/img-header-bugfix-app_end

image header bug fixed
fixed AR bug
added delete button
Merge pull request #7 from waalzer/master

added delete button
fixed returnUrl