[INTERNAL] NavContainer: default transition is "slide" on WP8.1
[INTERNAL] NavContainer: default transition is "slide" on WP8.1

Change-Id: If63fa8d5a2a7ea705c23c40a875c7ff79ae8b2e9

cschuff/openui5,cschuff/openui5,SQCLabs/openui5,nzamani/openui5,SAP/openui5,SQCLabs/openui5,SAP/openui5,cschuff/openui5,olirogers/openui5,SAP/openui5,SAP/openui5,SQCLabs/openui5,olirogers/openui5,olirogers/openui5,nzamani/openui5,nzamani/openui5