File admin refactoring to support multiple backends

Fix column filters with translateable column labels.

Update view.py

prevent assuming 'id' is primary key for details view

Prevent duplicate translations, localize "New" for inline forms

self is the third arg for filter apply

Friendly choices for editable boolean field.

fix typo

add support for new version of flask-login and flask-security

improve column_filters documentation

Fix #1122 filter options translations.

The lazy_gettext was evaluated too soon, before the translator
is ready.

make form_widget_args working for inline_models

f.name for inlined_models is something like parent-idx-slave, so we
should use f.short_name to get proper widget_args

Fix #1101 form.js addInlineField for new nested elements

fix inet types converter, search by non-text fields

Fix regex validators when using form_args

change mongoengine extra field order test to match sqla/peewee

make flask-admin compatible with peewee 2.7.4