Started new app feedback
Main feedback models
Add translatable category
Add pictograms
Custom list columns
Do not repeat values lists fragments in templates
Replace user groups check with perms check
Change email settings, now control managers
Add command to test managers emails
Merge pull request #1043 from makinacorpus/do_not_repeat_lists

Do not repeat lists in templates
Merge pull request #1044 from makinacorpus/fix_templates_add_perms

Fix templates addition perms check
Some docs and changelog
CMD email
Send a mail on Report object creation
Test that email failure does not prevent creation
Test creation of reports via simple POST
Test that report can be created without geom
Check that locale follows accept-language
Update translation
Provide ids in feedback categories