code style: line breaks

coding style: control flow whitespaces

codestyle adjustments: function declaration braces/spaces

codestyle adjustments: class declaration braces

introduce a redirect action

Action can now abort to 'redirect' to explicitly trigger a redirect
back to showing the current page. Automatic triggering for post->show is
now only done when a 'show' a

introduce a redirect action

Action can now abort to 'redirect' to explicitly trigger a redirect
back to showing the current page. Automatic triggering for post->show is
now only done when a 'show' action was not explicitly requested.

show more ...

allow actions to throw exception that are shown to the user

some doc blocks for the exceptions

start of a refactoring the action routing

This is neither complete nor working, yet