[docs][s]: added tutorials sections with tutorial on how to build gra… (#161)
[docs][s]: added tutorials sections with tutorial on how to build gra… (#161)

* [docs][s]: added tutorials sections with tutorial on how to build graphs page - refs #153

* [docs-home][s]: added tutorials section in docs home page - refs #153

* [docs][xs]: docs home page http to https - refs #153

* [docs][s]: updated tutorials on docs home page - refs #153

datahq/frontend,datahq/frontend