v4.2.49 release

v4.2.49 had three bug fixes.

Significant defects addressed

• Corrected an issue that threw a java.lang.NullPointerException error when uploading images through the Upload widget.
• Corrected an issue preventing proper update of default placeholder text. For example, a Byline field's default placeholder text is an asset's author. Deleting the author from the asset did not remove the author from the Byline field.
• Corrected an issue causing the rich-text editor to mark correctly spelled words as incorrect, and incorrectly spelled words as correct.