*8094* Remove group-based masthead management
*8094* Remove group cruft
*8094* Fix help toggle
*8094* Added OJS logo
*8094* Context selector tweak
*8094* Fix template discrepancies
*8094* Fix working contexts var availability
*8094* Admin functions to PKP lib
[OJS.de - OA-S I - ap3: core OJS infrastructure] Defining the metrics API in the ReportPlugin base class
[OJS.de - OA-S I - ap4: event logging hook] Implement event logging hook.
[PKP bugs] Add request to template manager calls in issue handler.

Conflicts:

	pages/issue/IssueHandler.inc.php
[OJS.de - OA-S I - ap6: opt-out and privacy info] implement opt-out and privacy info.

Conflicts:

	pages/manager/PluginHandler.inc.php
Merge pull request #66 from ojsde/integration

Latest OJS.de changes (intermediate version of the OA-S plug-in)
*8095* locale tweaks for groups
*8095* user group XML tweaks for OJS roles
*8095* add migration code for roles -> user groups during upgrade
*8094* Add missing plugin category keys to PKP lib
*8094* Add lockss/clockss settings to website mgmt
*8094* Move OAI stuff to indexing tab
*8094* Move receipt addressing to PKP lib