Sometimes we want a shorter version (and not the abbr.) of the instance/difficulty name to be shown instead of the full name.

Examples:

Full: Dawn of the Infinites: Galakrond's Fall
Short: DOTI: Galakrond's Fall
Abbr: FALL

Full: Looking For Raid
Short: LFR
Abbr: LFR

The Short name should be used instead of the full name in the sidebar and raid vault tooltip