Add sample model and controller without relationship with project
Adding ability for samples and initiate database with users of all roles
Fix homepage footer bug
Merge branch 'homepage' into dev
Merge branch 'dev' into samples
Merge branch 'dev' into homepage
Fix footer style bug
Merge branch 'homepage' into dev
Merge branch 'dev' into samples
Samples view interface define
Merge branch 'samples' of github.com:yftang/bipc into samples

Conflicts:
	db/schema.rb