Fixed Unintentional Usage of Rendering a Header Image for Some Macros in Edit Mode

The section macro and the transclusion macro render themselves in edit mode different to other macros. Their header image is replaced with an image that renders the most important information for an editing user. In case of the section macro this is the name of the section. Some macros (e.g. Section Compiler Reference macro or Section Index macro) were affected by this feature unintentionally. The transclusion macro was rendered with an "empty" image in some cases, which has been fixed to display the "@self" information.