Merge branch 'maint-1.0'
- maint-1.0: I18N: updates to Greek translation installation: more info about max_allowed_packet
- Merge notes: el.po was prepared for master, but was first committed to maint-1.0 and only then here, so that Greek translation would be updated also for Invenio v1.0 release series.
Conflicts:
po/el.po