Display file picker dialog when clicking import template toolbox button.
Display file picker dialog when clicking import template toolbox button.

Change-Id: Id4eba9076163f2d2b2916ad253236c0c377da37c

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core