Issue #2239419 by thpoul, Wim Leers, webchick, maczizek, xjm, mlewand, Jeff Burnz, tstoeckler, Tade0, Bojhan, yoroy, tkoleary, darketaine, hass, sun, maxilein, nod_, alexpott, Feuerwagen, oleq: Include CKEditor's AutoGrow plug-in

Issue #2598070 by Wim Leers, jaxxed, DuaelFr, Haza, Reinmar, oleq: [regression] CKEditor Link button does not show if HTML filtering is enabled

Issue #2510380 by Wim Leers, DuaelFr, mlewand, quicksketch, Reinmar, oleq: Images cannot be linked in CKEditor

Revert "Issue #2510380 by Wim Leers, DuaelFr, mlewand, quicksketch, Reinmar, oleq: Images cannot be linked in CKEditor"

This reverts commit 2d342c0f.

Issue #2510380 by Wim Leers, DuaelFr, mlewand, quicksketch, Reinmar, oleq: Images cannot be linked in CKEditor