adds a disclaimer for the user generated ad content
adds a confirmation message for reporting an ad
minor improvements
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 price and fixes a bug
  displays a message when no posts exists
  adds a breadcrumb and makes some minor UI enhancements
  small translation changes

Conflicts:
	app/views/ads/_search_field.html.erb