remove dead code: region_list
remove code related to comment modal
use layout template for comments page
preserve the field's value
move the species comment form to separate module
'range' becomes a nested form
render label and input using wtforms
rename species form module and classes
custom populate_obj method
unit test for populating a comment object
switch to '.' as separator
another nested form
compose range_trend_period from two values
range trend long
favourable range
save the conclusion
TextField instead of Field
use wtforms to render the inputs
rename favourable_value to reference_value
fix whitespace