started specing broadcasts controller
fixed merged conflict
Event types seeds new truncates all events before adding new ones

fixes an error of dublicated idEvent types seeds new truncates all
events before adding new ones

fixes an error of dublicated ids
new schema after a drop and migrate
deletion behavior spec
braodcast index spec
flash reason for failed password reset
current broadcast organisation interpretation
code style
base controller for admin area

by letting all admin controllers inherit from a Admin::BaseController
it can set requirements globally.
For now this includes:
 - the admin layout
 - reqireing a login in user
split broadcast controller

into a public version only showing published broadcasts ( only having #index and #show)
and a admin/broadcasts controller supporting a complete resoruce
 - using a admin layout
 - requireing a loged in user
 - with old view thus links are still pointing to the none admin version
adjusted admin sidebar navigation
fixed conflicts
redirect to login_url if not logged in
shared group of admin behavior
admin controller specs + admin/BC_controller impl
index spec + impl
replace depicated find(:all) with just .all
replace deplicated find(:first) with just .first
fixed bug introducted by refactoring