Added translation for the `agency` dropdown menu.
Renamed ForwardingTransitionController, to support the same lookup for tasks and for forwardings.

Only when the name is identical, the adapter lookup (see https://github.com/4teamwork/opengever.core/blob/65af2a06b2098034e18c1bf911f1a0f620005be7/opengever/task/viewlets/actionmenu.py#L28) works correctly for forwardings too.
Merge pull request #618 from 4teamwork/pg_agency_button

Fixes actionmenu for forwardings.
Fixed move items functionality for moving tasks.
Merge pull request #620 from 4teamwork/lg-ldap-util-operational-attributes

LDAP util: When querying for schema, deal with servers that don't support listing all operational attributes (RFC 3673).
Drop og.pdfconverter from development pkgs because it causes test failures.
Merge pull request #622 from 4teamwork/lg-drop-pdfconverter-from-sources

Drop og.pdfconverter from development pkgs because it causes test failures
Merge pull request #621 from 4teamwork/pg_fix_move_items_for_task

Fixed move items functionality for moving tasks.
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.
Remove redundant .get() default values, PEP8.
OGDS Updater: Make log messages more explicit.
OGDS sync: Unify OGDS synchronization so there's a single function

that does the sync and that can be called from anywhere.
OGDS sync: Add a `bin/instance sync_ogds` zopectl command that

can be used from a cron job.