Substituted deprecated {{each}} helper with recommended {{foreach}}
Substituted deprecated {{each}} helper with recommended {{foreach}}

refs https://github.com/TryGhost/gscan/issues/123

- As documentation says (https://docs.ghost.org/api/handlebars-themes/helpers/foreach/)  {{foreach}} should always be used instead of native {{each}} helper
- Deprecation warning was implemented in gscan and  will prompt when uploading the theme

jedidja/Casper,jedidja/Casper,eduardochiaro/Casper-Light,russmckendrick/Casper,eduardochiaro/Casper-Light,ImKcat/ImKcatCasper,alvareztech/Casper,TryGhost/Casper,Inchdev/blog-theme,matitalatina/Casper,Inchdev/blog-theme,dlew/Casper,matitalatina/Casper,alvareztech/Casper