'Get queries' in Browse now working with real database.
Adapt browse code to improved passage db & fix json_monads problem.
Remove no longer used generate_monads function.
Super-improve speed 'Get Queries' by using raw MySQL.

Original was faulty anyway.
Add DAL implementation of 'Get queries'.
Cleanup Get Queries processing.

* Remove helper/unnecessary code;
* Remove duplicate functions;
* Remove intersect from grouping (this is already
being done by the SQL query with GREATEST and
LEAST);
* Improve docstrings;
* Leave the DAL implementation for the MySQL query
as this might be useful for maintainability;
* Remove display of monadsets and JSON monads in
view.
Add .swp files to gitignore.
Add some content to the homepage.
Remove monadsets.monads virtual field, no longer used.