Configuration of basic header and footer.
Added support for title, author and date configuration. Refactored calling LaTeX commands in the renderer.
Added support for document class configuration
Added headers configuration for different document classes.
Added configuration for table of contents - on / off.
Quotes inserted now depend on the chosen document language.
Added configuration for media folder in the ZIP archive.
Added suppor for configuration of default image parameters.
Configuration completed. Refactoring and commenting of code.
Fixed bug with image inserting + few bugs with acceptation tests.