Validate translations
Validate translations

Validate that translations are ok using msgfmt, so that no invalid
ones can be imported.

Closes-Bug: #1536214
Change-Id: Ic1f106684270a8f2197e0fb2a67d6fc00535ee65

CCI-MOC/nova,Francis-Liu/animated-broccoli,Francis-Liu/animated-broccoli,CCI-MOC/nova