Activities templates allowing setting specific value to int type vconf keys.

Activities templates allowing setting specific value to int type vconf keys.

Refactor ChangeScanningMethod, also renamed to ChangeScanningMethodActivity
Add:
+ ChangeTextEditionModeActivity
+ SetCharacterGranularityActivity
+ SetWordGranularityActivity
+ SetLineGranularityActivity
+ SetParagraphGranularityActivity

Set...Activity needs new functionality in UI,
Select Activity allow returning to the previous menu after sending activity change request

Change-Id: I27d591e948b33efc43cde4c42b33f3773266f222