biling model paragraph
new model - funcs
Biling field for paragraphs

boolean func saying if there is data
Working on biling paragraph
Added a generic way to print bilingual paragraphs -

using a list of biling fields in the models,
and using custom templates filters,

also - using a nice tag - expr - allowing to calculate a python expression into a variable (=creating lists in the template.

Moving more than 1 arg to the filter - by using lists.
The template filters and tags
Fixed search field names - for new bilingual model
new dumpdata
Added ecological description field
new csv for species