Q_GLOBAL_STATIC's use of noexcept makes QStringLiteral not work

Change-Id: Ie999e33b39d7abc2dca418e5c27dbc619a8b74fa
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Lorn Potter <lorn.potter@jollamobile.com>