Reverted webapp to empty state.
Added controller dispatch to webapp.
Added show_view, show_view_file, redirect, redirect_url and build_url webapp helper functions.
Added ProgramError exception type.
Added login controller to webapp.
Added AuthError.
Added layout helper functions to webapp.
Added authentication check.
Added static HTML files for integration in dev/.
Added fetch_view and fetch_view_file to webapp view helpers.
Added widgets to webapp.
Added draft for webapp home controller and layout files.
Added symlink for webapp media files.