fix #182
Merge pull request #185 from hasantayyar/master

Product tour implementation #71
Merge pull request #186 from hmert/master

fix #182
Merge pull request #6 from okulbilisim/master

merge
Institution:about may be null
Merge pull request #187 from hmert/master

merge
travis 143
Merge pull request #188 from hmert/master

travis 143
footer into container
Merge pull request #189 from hmert/master

footer into container
resolve conflict