Missing StrikeThrough in CKEditor

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.0.6 GA, 6.0.11 EE
• Fix Version/s: --Sprint - SP, 6.0.12 EE, 6.1.0 CE RC1
• Component/s: CKEditor, ~ [Archived] Frontend Infrastructure
• Labels: None
• Branch Version/s:
  6.0.x
• Backported to Branch:
  Committed

CKEDITOR toolbars are not showing StrikeThrough option where it is supposed to be.

Steps to reproduce:
1. Add portlet (blog, web content, wiki (html), etc)
2. Go to editor
3. Toolbar should show [ Bold, Italic, Underline, StrikeThrough ]
4. StrikeThrough is missing