https://hackerone.com/reports/23921
Merge pull request #1835 from Mnkras/single_user_hash

https://hackerone.com/reports/23921
updating version
https://hackerone.com/reports/25266
https://hackerone.com/reports/25266
Remove undefined and redundant variable
Merge pull request #1837 from ojalehto/refactor/remove-undefined-and-redundant-variable

Remove undefined and redundant variable
Handle null numeric types
Fix tinymce tabs