Update images constants

*Update Messages to include import related messages

Change-Id: Ia3325b5d0c30ff6446c24cd42c6693d6664cd166
Update images types

*Added image types class

Change-Id: I9c6440c4e80dbe550a70aaffcebcea30cefaa5a0
Update images image model

*Updated image model to account for extra image properties

Change-Id: I802fbc74caeca997be91726f0e3e068311499926
Update images task model

*Updated task model to account for export tasks

Change-Id: I213ff9c2c92e8d763dee3321e337d16647464e41
Merge "Update images types"
Merge "Update images task model"
Merge "Update images image model"
Merge "Update images constants"