Prompt to confirm on Show All

Signed-off-by: Madhura Jayaratne <madhura.cj@gmail.com>
rfe #1556 Disabling Show all

Signed-off-by: Madhura Jayaratne <madhura.cj@gmail.com>
Fix failing tests

Signed-off-by: Madhura Jayaratne <madhura.cj@gmail.com>
Merge pull request #1400 from madhuracj/ShowAll1

rfe #1556 implemented with a checkbox for 'Show all'