Python : Improve editing of tags;
Python : Fix error upon no results on Atom;
SQLite : Add triggers to count instances of entries;
SQLite : Add triggers to delete entries
SQLite : Add triggers to delete tags;
XSLT : Remove control characters in favour of nbsp entity;
XSLT : Improve links and design;
XHTML : Add a new document about folksonomy;
XHTML : Add a new template for URL;
XHTML : Add indicators.
