Move get_fileupdload_widget
Remove unused module
Move deferred_edit and remove autocomplete widget
Remove unusefull widget builder
Move the model's related forms tools to the corresponding module
Refactor package organisations

Forms are not a view component anymore, so we split the part that is
view related (so as BaseFormView) and the agnostic part
Remove void module
Move widgets in deform_extend module
Add a random_tag_id func to ascii module
Enhance the table widget and add a form one
Fix imports in view package
Fix module list
Move some funcs
fix imports
Remove models/widgets
Fix imports
Fix imports
Remove blocking validation on costs

lines can be either positive or negative