[FEATURE] sap.ui.model.odata.type.DateTime

PS1: first version, w/o display-format
PS2: rebased, displayFormat: Date
PS3: reviews, error messages, JSDoc
PS4: clean-up
PS5: reviews, message with demo date

Change-Id: I18342f58ea5ee3e36a54c6746e3cd4845dd01e2d
[INTERNAL] GroupController: limit the number of groups to one for
m.Table

Change-Id: Ib383345b416b702383e2c3618b3022811a66eeca
Merge "[INTERNAL] GroupController: limit the number of groups to one for m.Table"
Merge "[FEATURE] sap.ui.model.odata.type.DateTime"