Revert "XWIKI-17919: Upgrade to CKEditor Integration 1.51" We can't build CKEditor on CI ATM so we can't use the snapshot unfortunately..
Revert "XWIKI-17919: Upgrade to CKEditor Integration 1.51"
We can't build CKEditor on CI ATM so we can't use the snapshot unfortunately..

This reverts commit e6e26faef252d175083aba94a0eca39226fa7c13.

xwiki/xwiki-platform,xwiki/xwiki-platform,xwiki/xwiki-platform,xwiki/xwiki-platform,xwiki/xwiki-platform