remove obsolete pages views
redone the Pages Model altogether

- Pages now sports templates, layouts and widgets
- routes connects to /page/<slug>
- Pages Controller defaults to scaffolding
- PageController (singular) is for rendering frontend
- added Pages to radium navigation
add Content Helper
improve Navigations::group()
minor whitespace updated on PageController
adding Page Helper
adding Widget Helper
adding contents/view widget (incl. admin-tpl)
adding data and list widget
adding configurations/view Widget
different view-paths Handling, using Media::type()
adding `full` and `half` page templates