Merge branch 'upstream-edit-after-create' of https://github.com/Code4SA/flask-admin into Code4SA-upstream-edit-after-create

Make 'contains' the default string filter operator

Update filters.py

[fix] ListField validation

missed a comma, sorry

add trove classifiers to setup.py

will make it so https://caniusepython3.com stops showing this as a blocker

based on the versions currently tested in Travis

FileUploadInput fix

Added after_model_delete hook on view classes like after_model_change

If you edit a model where file field is required you will get a validation error if file field is set but wasn't changed.
You should pass filename in form data if it is already set.

fix mapbox-v4

Fix “object has no attribute 'message’” in py3

There are some programmers using unicode strings by default in Python 2 (from __future__ import unicode_literals). In that case "str.lower" raises TypeError (str type is expected, unicode given). This propose fixed mentioned issue.

Fixed some other references form mrjoes (user) to flask-admin (org)

Add missing .mo files for translations, correct folder names

Add afrikaans machine translations

Improve translations

Upon adding a filter for a string field, 'equals' is the
default selected operator. The broader option, 'contains',
is more like the searches people typically do on web
site and operating system search boxes. Being broader,
contains is more generally useful for string fields than
equals.

This change places contains first in the list so it is
the default choice, preventing the user from having to
select it. The change applies to all three data engines
(MongoEngine, Peewee, and SQLAlchemy).

Revert 860 ks mapbox v4

control inline model row control display

Give users the option to use mapbox v4