Fix issue when uploading files with firefox over the Document AddForm.

Added temporary monkeypatch to ignore mimetypes sent by the browser (see https://github.com/plone/plone.formwidget.namedfile/pull/9):
We can't include the fix with the newests version (1.0.11), because this versions need also the newest z3c.form (see https://github.com/plone/plone.formwidget.namedfile/pull/10).

With the planed update to Plone 4.3 this monkeypatch should be removed.
Merge pull request #616 from 4teamwork/pg_formwidget_namedfile_monkeypath

Fix issue when uploading files with firefox over the Document AddForm
OGDS sync: Remove old unused shell script.
Fix incorrect and unnecessary logger reuse.
Add some debughelpers to og.base (previously in og.maintenance).
Remove redundant WARNING prefix in log messages, PEP8.
Rename `og.ogds.base.ldap_import` to just `sync` and move `ldap_util` into it.