removed debugger
Merge branch 'master' of github.com:techvision/brails4

Conflicts:
	Gemfile.lock
set root to levels, removed topics validation from level model, added
levels index page
Merge branch 'master' of github.com:techvision/brails4

Conflicts:
	app/views/levels/index.html.haml
added mina gem for deployment
Merge branch 'master' of github.com:techvision/brails4
removing all gems from repo
write the seed file.
Merge branch 'master' of github.com:techvision/brails4
skip the content validation from seed file.
Topic page design
Merge branch 'master' of github.com:techvision/brails4