Keep existing 'column-header' class while adding new 'col-<column_name>' classes to columns in list view.

Merge branch 'upstream-column-classes' of https://github.com/Code4SA/flask-admin into Code4SA-upstream-column-classes

Move translations to Crowdin

Update link to Travis CI test result image.

Fix tests

Avoid issue with latest pymongo version (see: https://github.com/MongoEngine/mongoengine/issues/950).

Merge branch 'kwikiel-typo-fix' of git://github.com/kwikiel/flask-admin into kwikiel-kwikiel-typo-fix

lazy import helpers to prevent circular imports

Warn on multi-column field in form. fixes #575

Simply warning doesn't actually fix any problem, but replaces the earlier TypeError with another TypeError. So, continue in case of a multi-column field to skip it.

warn on multi-column properties - fixes #575

Show warning instead of raising on multiple-column properties

Add italian

No colon after function definition

Font Awesome support for Flask Admin

Always show flashed messages.

Fix display of form errors for bootstrap 3.

Don't hide flashed messages when redirecting back to
list view. It leaves the user confused as to whether
the operation was successful or not.

Change Submit button text to Save

This makes it clearer what the button actually does, particularly
when there is a 'Save and Continue' button alongside it.
"Submit" doesn't tell the user what's going to happen when they click
the button, only that it submits the form.

Catch import error on AppEngine.