Scripting and REST API improvements

The following improvements to the ConSol CM API and REST API have been made.

New method for PDF generation with CSS (#664596)

The ConSol CM API has been extended by a new method for generating PDF documents from XHTML with CSS styling. The method generatePDFDocumentFromXHTMLAndCss(String pFileName, String pXHTML, String pCssString) has been added to ContentFileTemplateService for this purpose. It allows to pass CSS properties directly as a String, making it easier for consultants and developers to integrate CSS styling.