#7 txt2tag plugin

[darkwise]

Text formating for entries and pages writen with txt2tag language. Inspired from markdown plugin.

entry plugin: http://ziedabid.free.fr/mybox/plugins/entry/format/txt2tags.sh
page plugin: http://ziedabid.free.fr/mybox/plugins/page/format/txt2tags.sh

Tested with nb 3.4.1