Update delete-samples command to take multiple ids

The ids are simply arguments after the command, each separated by a space.

Signed-off-by: Don Naegely <naegelyd@gmail.com>
Avoid extra query during sample delete pre-check

Signed-off-by: Don Naegely <naegelyd@gmail.com>
Query against sample when generating invalid id list

Signed-off-by: Don Naegely <naegelyd@gmail.com>
Merge pull request #262 from cbmi/issue-261

Update delete-samples command to take multiple ids