adds simple index and show page
Merge branch 'develop' of https://github.com/dirkschumacher/iUPB into develop

# By Dirk Schumacher
# Via Dirk Schumacher
* 'develop' of https://github.com/dirkschumacher/iUPB:
  adds a form for ads
  adds a link to the ads on the index page

Conflicts:
	app/controllers/ads_controller.rb
better index page and report
adds photos, nicer views, nicer URLs, and a search