Fix ridiculous `CHANGELOG-EE.md` entries for 8.14.0

[ci skip]

CHANGELOG-EE.md

@@ -2,32 +2,10 @@ Please view this file on the master branch, on stable branches it's out of date.
 
 ## 8.14.0 (2016-11-22)
 
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-## 8.14.0 (2016-11-22)
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-## 8.14.0 (2016-11-22)
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-## 8.14.0 (2016-11-22)
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 - Gracefully recover from previously failed rebase.
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-## 8.14.0 (2016-11-22)
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-## 8.14.0 (2016-11-22)
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 - Disable retries for remote mirror update worker. !848
 - Fix Approvals API documentation.
 - Add ability to set approvals_before_merge for project through the API.
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-## 8.14.0 (2016-11-22)
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 - gitlab:check rake task checks ES version according to requirements
 - Convert ASCII-8BIT LDAP DNs to UTF-8 to avoid unnecessary user deletions
 - [Fix] Only owner can see "Projects" button in group edit menu