Fixed some timing problems in FolderChooserList

The FolderChooserList was not properly initialized if some contents were not yet loaded. The has been fixed now.

(CMS-19158)

Possible Format-Loss For Richtext in Studio Fixed

For CoreMedia Richtext created outside CoreMedia Studio you may have experienced losing formatting when loading these into CoreMedia Studio.

The root-cause, which required all CoreMedia Richtext documents to come with a xlink namespace declaration, got fixed.

(CMS-19138)

Studio Client Now Has X-Content-Type-Options "nosniff" Header

The Studio Client now has the X-Content-Type-Options "nosniff" header set for all client requests. The Studio Server already added this header previously.

(CMS-19050)

Fixed Timing Problem when Loading Site Specific Settings

If global settings were loaded before the site specific settings the global settings sometimes did take precedence. This has been fixed now.

(CMS-18549)

Fixed console warnings about deprecated Ext.EventManager

The EventManager is outdated causing a lot of warnings when opening e.g. an CMArticle form due to still being used. Replaced all usages in the code with corresponding alternatives.

(CMS-16061)