Design copied from NyaaTorrents
Reorganised some sql queries
Added dynamic navigation within torrents
Added nesting templates support
Added more variables/functions imported in the templates
Separated templates functions and variables in other files for more clarity
No CSS and Javascript in the index.html, more easy to maintain the design and the code.
Added a select for the number of item to show and added the new parameter to the SQL query.
Total number of item determined by the SQL query and not fixed.
