Latex templates: made location property configurable in registry.
Latex templates: don't show logo in default layout.

The logo only make sense for cutom client layouts.
Added conversion for location property.
Latex templates: Made client_title configurable.
Made default layout is easy customizable with CustomizableLayouts.
Added adjustments on the default layout tex templates.
Reworked dossiercover: added simple default dossiercover template.

The zug specific dossiercover will moved to opengever.zug.
Reworked dossierlisting PDF: made easier to customize.
PDF dossierlisting: implement labels translatable.
PDF dossierdetails: reworked dossier metadata part.

Dynamic generation, easier to customize.
Implemented a LaTexListing adapter, which generates latex tables.
Reworked dossierlisting pdf: use latexlisting adapter to generate the table.
Reworked dossierdetails PDF: made easier to customize and use LaTeXListing Adapters to generate tables.
Added Tests for the dossiercover.
Update landscape layout tests.
Reworked ILaTexListing: Use html to LaTeX conversion instead of generating latex in python.
Updated translations.
Merge pull request #131 from 4teamwork/pg_latex_templates_rework

Latex templates rework