Merge branch 'kalender' of https://github.com/andreassteph/fetsite into calendar

Conflicts:
	app/assets/stylesheets/formtastic-changes.css.scss
	app/controllers/beispiele_controller.rb
	app/views/studien/_form.html.erb
	config/locales/de.yml
	config/routes.rb

app/models/calendar.rb

@@ -0,0 +1,5 @@
+class Calendar < ActiveRecord::Base
+  attr_accessible :name, :public, :picture
+  has_and_belongs_to_many :calentries
+  mount_uploader :picture, PictureUploader
+end

app/models/calentry.rb

@@ -0,0 +1,17 @@
+class Calentry < ActiveRecord::Base
+  attr_accessible :ende, :start, :summary, :typ,:calendar_ids
+  has_and_belongs_to_many :calendars
+  validates :start, :presence => true
+  validates :typ, :presence => true
+  validate do |entry|
+	if entry.ende.nil? 
+		errors.add(:ende, "Es muss ein Endzeitpunkt vorhanden sein")
+	end
+  end
+  def start_time
+    start
+  end
+  def name
+	summary
+  end
+end