RichTextCorrectionConverter: Multiple corrected attributes ArrayIndexOutOfBounds exception fixed

In RichTextCorrectionConverter an ArrayIndexOutOfBounds exception was thrown when multiple attributes were adapted. This has been fixed and works now as expected.

(CMS-27003)

Fixed Content Feeder to Detect Cycles in CMS Catalog Categories

Fixed a bug in the Content Feeder to not run into a StackOverflowError, if there is a cycle in children links of CMCategory content items.

(CMS-25907)