Merge branch 'hotfix/7.3.1' into develop

* hotfix/7.3.1:
  * Fixed homepage
Merge branch 'hotfix/7.3.2' into develop

* hotfix/7.3.2:
  * Updated gems
Merge branch 'hotfix/7.3.3' into develop

* hotfix/7.3.3:
  * Updated gems
Merge branch 'hotfix/7.3.4' into develop

* hotfix/7.3.4:
  * Fixed homepage * Fixed version
Merge branch 'hotfix/7.3.5' into develop

* hotfix/7.3.5:
  * Updated gems
Merge branch 'hotfix/7.3.6' into develop

* hotfix/7.3.6:
  * Updated gems
* Added Deploy to Heroku button
* Updated gems
* Updated html5shiv
Merge branch 'release/7.4.0'

* release/7.4.0:
  * Added Deploy to Heroku button * Updated gems * Updated html5shiv