Added thread metadata (replies, images, gets) to the threads list.

Implemented form validation. When the form fails validation, showing the index page.

Added maximum threads count parameter to the settings. Delete the old posts to preserve the max count. Small design tweaks.

Truncating thread text in threads list. Fixed tag threads order.

Added post publication date to the templates.

Added thread bumping.

Added localization (not fully working). Added tags posting. Changed the design a bit.

Added license text.

Added images upload. Changed the design a bit. Reformatted some code by PEP 8. Changed the urls: not the main site is located at /, not /boards/.

Using redirect after a message has been posted.