[INTERNAL][FIX] P13nDimMeasurePanel.js : adding placeholder to chart type combobox
[INTERNAL][FIX] P13nDimMeasurePanel.js : adding placeholder to chart
type combobox

Change-Id: Ifabf49c4a776a90061cefc663dee9b8fffa8cdc6

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