ReStructuredText conversion
Fixed the problem with equal names of references in ReStructuredText output.
Added conversion of docinfo part to a table.
Added conversion of blockqoute to a list.
RstPrimerConversion looks very good
TODO:
Create more unit tests for ReStructuredText->DOM and DOM->ReStructuredText
- Fix pep8 in rst_in and rst_out converters
- Copy the part of code related to shifts in lists to moinwiki_out converter.
- Write a lot of docstrings for all my converters