Fix untranslatable strings in several dijits:

AutoGrid, EditPane, FlattenerGrid, GridColumnPicker and HoldingCode.

[LFW: One string amended in conflict resolution; commit message edited
to wrap; one line of code moved (this.nls assignment in
GridColumnPicker.js).]

Signed-off-by: Pasi Kallinen <pasi.kallinen@pttk.fi>
Signed-off-by: Lebbeous Fogle-Weekley <lebbeous@esilibrary.com>