Boxing & unboxing is the process of converting a primitive value into an object oriented wrapper class (boxing), or converting a value from an object oriented wrapper class back to the primitive value (unboxing).
The Old Dalaran will stay in Northrend, so yes, mages are going to have 2 portals to dalaran (one to Northrend and one to the Broken Isles)
The name Dalary is of American origin. The meaning of Dalary is modern invented name. Dalary is generally used as a girl's name. It consists of 7 letters and 3 syllables and is pronounced Da-lar-ee.