issue#549 - hid the Added by field from form_to_edit_entry
Merge pull request #553 from igoryen/issue#549

issue#549 - hid the Added by field from form_to_edit_entry
issue#550 - form_to_edit_entry.php: hid the source field
Merge pull request #554 from igoryen/issue#550

issue#550 - form_to_edit_entry.php: hid the source field