[FIX] sap.m.P13nColumnsPanel

-Fixes for personalization related problems such as resizes and other
issues related to reverting to the standard variant. 


Change-Id: I187a41bdd1b1d2bfe5e5648bef265d50662f384f
CR-Id: 012006153200015004362014
Merge "[FIX] sap.m.P13nColumnsPanel" into rel-1.26