Mako was originally used for HTML templating, especially for the original exporters. All new code, especially the webapp, uses Jinja2, as it is easier to read and debug. Refactor all legacy mako templates to use jinja. This will help with cross-compatibility between online and offline exporters.

• exporter/deconstructor/deconstructor_exporter.py
• exporter/goldendict/export_dpd.py
• exporter/goldendict/export_epd.py
• exporter/goldendict/export_help.py
• exporter/goldendict/export_roots.py
• exporter/goldendict/export_variant_spelling.py
• exporter/grammar_dict/grammar_dict.py
• exporter/kindle/kindle_exporter.py
• exporter/tpr/tpr_exporter.py