minor UI 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:
  displays the price information

Conflicts:
	app/views/ads/show.html.erb
Merge branch 'develop' of https://github.com/dirkschumacher/iUPB into develop

# By Dirk Schumacher
# Via Dirk Schumacher
* 'develop' of https://github.com/dirkschumacher/iUPB:
  enhanced the new view

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